Senin, 12 Agustus 2013

Aryanto R., Yuniarti., Gautama I. (2011). Prospective Mapping of Sustainable Package Tour Management to Improve Future Performance and Innovation of the Tour and Travel Industry. the 8th asian academy of management international conference



the 8th Asian Academy of Management International Conference
04 December 2011

Prospective Mapping of Sustainable Package Tour Management to Improve Future Performance and Innovation of the Tour and Travel Industry

Rudy Aryanto
Yuniarty 
 Idris Gautama

Bina Nusantara University


ABSTRACT

Accordance with the tourism industry as the largest business sector in the world economy, then ccurrently, rapid increase development of tourism industry in Indonesia, including the tour and travel industry, therefore many interesting variety of studies been done such as this research. This study aimed to build a prospective mapping of management model for sustainable tour packages in a tour and travel agent company as a case study. Given the complexity and the many interrelated factors in the performance management package tours, it is necessary to approach a holistic system. First, the method used in developing the performance management model is a sustainable package tour and, second, using prospective analysis. Determination of the attributes that reflect the sustainability performance of the tour package is based on field studies. Based on the four dimensions of sustainability, namely the dimensions before the trip, during trip, etc., and the tour leader are determined as much as 23 attributes. Attributes classified in four dimensions for each package tour: Junglelicious Africa, Asia Splendid, Adventurous Australia and New Zealand, Europe Romantical and Marvelous the U.S. and Canada. One of the results of this study is the design of stage conceptual model of performance management of sustainable tour package, which is the identification of factors, stakeholder assessment, determination of entry points, the preparation and implementation of a simulation scenario models in order to achieve the strategic objectives of the performance management of sustainable tour package. Conceptual model described in the operational model in accordance with the results for performance analysis package tours. The owner of the interest or stakeholders of tour and travel agent should play an active role in a comprehensive conduct performance management and generate innovation in an integrated tour package to manage the performance of sustainable tour package can be realized.

Key words: Tour Package, Sustainable Package Tour Management, Prospective Analysis


INTRODUCTION

Constraints faced in managing the performance of the package tour is the difficulty of sustainability assessing of the multidimensional management performance of the tour package, and the difficulty to describe the impact of the sustainability assessment of a strategic management formulation policy performance of tour package in the future prospectively.
In the context of performance management of sustainable tour package requires an integrated management plan that includes procedures for handling the tour; before the trip, during trip, other factors and the tour leader. Based on the snapshot can be obtained a comprehensive overview of the sustainable management status for the actual performance of the tour package at the same time can be identified various problems and solutions for decision-making direction and the determination of policy priorities in the management of tour and travel agents. In this study, the snapshot will be made by the sustainability analysis method, and the result is used as the basis for building models of performance management in the tour package tour and travel agents by using a prospective analysis.
Based on the results of a prospective analysis of factors combined to obtain a key factor Junglelicious Africa tour packages are: the diversity of the offered tour packages and hotel use. Key factors for Splendid Asia tour package, namely: the diversity of the offered tour packages and tour leader who put the common good. Key factors for Adventurous tour packages Australia and New Zealand are: diversity offers tour packages and hotel use. Key factors for Romantical Europe tour package, namely: clarity / accuracy of information provided and tour leader who put the common good. Key factors for package tours Marvelous U.S. and Canada are: the responsibility of leaders and tour the clarity / accuracy of information provided. Based on existing conditions at the moment, there are three scenarios that might happen, pessimistic scenario, moderate, and optimistic. Based on the scenario that was built and in order to achieve the ideal scenario is the recommended scenario is the optimistic scenario.

Research Objective
The purpose of this study is to establish a performance management model of sustainable tour package. To achieve these objectives need to be assessment of the following things: 1) Identify the attributes that can reflect the tour package status i.e. before the trip, during the trip and others as well as tour leader, 2) Analyzing the performance of sustainability indexes tour package, 3) Build a model of performance management in a sustainable tour package tour and travel agents, and 4) Formulate policies and ongoing performance management strategy scenarios in tour and travel agents.


LITERATURE REVIEW

Tour Package Management in Tourism Tour & Travel Agent Company
Tourism as the largest business sectors in the world economy, in 2010, travel & tourism Responsible to account for 9.2%, U.S. $ 5.751 billion, and provide a total of 235 million jobs and over 10% of the GDP worldwide (UNWTO, 2011). WTO states that tourism comprises the activities of persons traveling to and staying in places outside their usual environment for not more than one consecutive year for leisure, business and other purposes. (WTO, 1992: subsequently ratified by the UN Statistical Commission in 1994), follows from the definitions discussed that any visit to a tourism destination comprises a mix of several different components. These include transport, accommodation, attractions and other facilities, Such as catering and entertainments (Middleton, Fyall and Morgan, 2009), in order to connect the willingness to travel of tourist to destinations and facilities will require an important supporting industry to manage the travel namely tour and travel agency or travel bureau. According to Pitana and Diarta (2009) the tour and travel company’s human resources needed are 1) the travel agencies involving administrative personnel, travel advisory, research, marketing, consultants, accountants, reservation, computer experts, etc, 2) involving personnel tour companies tour manager, tour coordinator, tour planner, marketing, reservations, accountants, travel agents, sales agents, group tour specialist, coordinator hotel, etc.  Meanwhile, the functions performed by the tour and travel agents include reservations, ticketing, tour package, and handling travel documents (Mulyadi, 2009). For tour companies and travel agents to operates package tours needed management activities that well-organized and sustained, important before making the tour package, then the head of tour and travel agents to decide in advance the types of tour package by a joint team consisting of tour planner marketing - tour department. Tour packages generally should pay attention to trends and tendencies tour and set a competitive price, have a good quality service, making an attractive promotion (Kesrul. 2003).       

Rapid Appraisal Sustainability Index of Tour Package Performance
The first step determines the level of sustainability of tour & travel company by using MDS analysis, one of the methods used are rapid appraisal a multi-disciplinary technique for evaluating the comparative sustainability based on a number of attributes or indicators that allow for easy scoring (Fauzi and Anna, 2005). In Rapid Analysis Apraissal, resources can be defined as an entity in a broad scope, or in such a narrow scope in a single jurisdiction. A number of resource attributes can be compared, or even the time trajectory of individual resources can be in the plot. The attributes of each dimension to be evaluated can be chosen to reflect sustainability, and can be repaired or replaced when new information obtained. According to Susilo (2003) attributes of each dimension of sustainable development can be analyzed and used to rapidly assess the status of certain sectors of sustainable development by using multiple methods of non-parametric variables, called multidimensional scaling (MDS). The results of the evaluation of the sustainability performance of this tour package will be the analysis of linkages and dependencies among the factors to determine the priority order policy. Dominant factors will be the basis for building models.

Structural Prospective Analysis
There are some benefit from the prospective analysis are: (1) to prepare a strategic action that needs to be done and (2) to see whether changes are needed in the future. Prospective analysis used to design appropriate policy strategy.  Hartrisari (2007) suggested stages in the prospective analysis consists of: 1) Definition of the objectives of the system studied, 2) Identify the factors that influence the achievement of that goal which is usually a system that assessed the needs of stakeholders, 3) Assessment of direct influence between the factors, 4) Preparation of state may occur on the criteria, 5) construction of scenarios, 6) scenario analysis and strategy formulation, 7) Based on the scenario that had been developed previously, then discussed the strategies necessary to achieve the desired scenario or to avoid a scenario that would negatively impact the system.


 

Research Design and Unit Analysis

            The study design was intended to achieve the 4 kinds of research objectives that have been established, that is by doing the type of descriptive research, using survey research methods, and has a time horizon of a cross-sectional.
Primary data used is in the form of interviews and research questionnaires to the stakeholders in the tour and travel agent company named PT. Golden Rama Express. The secondary data has been obtained from existing company database and from literature that support this research.

Operationalization of Research Variables

Dimensions of the operationalization of research variables, then the concept of research is intended for performance before the tour, during the Tour, the tour leader's performance, and other variables. Indicator assessment comes from the customer and the tour participants, the scale of measurement used is "itemized-rating scale ordinal". Attributes dimensional operationalization of research variables are:

Table 1. Dimension Attribute of Research Variable Operational 

Before Trip
During Trip
Others
Tour Leader
Precision of information
telephone service
agency staff service
tour preparation
airport handling
airline
hotel
food menu
destination attraction
bus and driver
local guide
tour package diversity
facilities
supporting utilities
Accountability
responsibility
hospitality
knowledge
on time
itinerary
problem solution
team interest
customer need

Analysis Methods

Methods of analysis used in this research is descriptive method through a that will guide the research on such a complex task (Levy and Ellis. 2006). System approach is to identify general phenomena which are found in many disciplines, such as the phenomenon of growth. More systematic, approach is to arrange the empirical fields in a certain hierarchic order, a hierarchy of systems in which each higher systems level has a higher degree of complexity. (Borner and Kevin. 2010). To support the system approach then this research using analysis tools of multidimensional scaling (MDS) dan prospective analysis (MICMAC).

 

Test of Validity and Reliability

On the sustainability analysis of test validity by using SPSS, the validity test performed by comparing the correlation coefficient and the r-table. Value will be declared invalid if the correlation coefficient > r-table. The next step, study used the SPSS Reliability Test done by comparing r cronbach alpha and r-table.

Sustainable Analysis of Tour Package Management Performance

Sustainability analysis in performance management package tour conducted by MDS approach through several phases, consisting of: 1) the stage of determining the performance attributes of tour package for each dimension (before the trip, during the trip, other dimensions and the tour leader), 2 ) stage of the assessment of each attribute in an ordinal scale based on sustainability criteria for each factor and ordination analysis based on multidimensional scaling method (MDS), and 3) the stage of indexing and the status of sustainability performance management package tour in the tour and travel agent company. The range of scores ranged from 1 to 4, which means starting from less to very good.
ALSCAL methods optimize the distance squared (squared distance = ) against the square data (initial point = ), which in three dimensions (i, j, k) is written in a formula called the S-Stress as follows:
 


RSQ is a weighted Euclidian distance, or written:
 


Prospective Analysis
1.     Direct Technique of MICMAC Method
After getting input from the study group, then assigned a contextual consideration of the relationship between sub-matrix elements and drafted a direct relationship MICMAC (matrice d'Impact Croisés - Multiplicaction Appliquée a un Classement). Classification of sub-elements are presented in four quadrants: Quadrant 1: Input variables (variable determinant), Quadrant 2: Relay variables (variable contact), Quadrant 3: Resulting variables (dependent variable), Quadrant 4: Excluded variables (independent variables). Taking into account the Influence (I) and Dependence (D) of each sub-element, then the matrix MICMAC direct relationship can be arranged in place on each ordinate (x, y) respectively. As in the following matrices:
 
 

Figure 1. Relationship simulation MICMAC Matrix

2.     Indirect Technique of MICMAC Method
Stages on indirect relationships implemented are: 1) create listing variables, 2) describe relationships between variables, 3) identified the key variables using MICMAC. Thus, it can set priorities and sequence of stages of system implementation. As the analysis tool of prospective models has been used morphological methods. To find these scenarios, we use morphological analysis to explore future possibilities in a systematic way, by studying each combination obtained from the description of a system. (Godet. 2004)


FINDINGS

Test of Validity and Reliability
Validity and reliability test was conducted with 90% confidence level using SPSS v16.00, and performed for 99 respondents so that df (degree of freedom) of 97, obtained subsequent r-table for 0:13. Calculating the validity of questionnaire data Junglelicious Africa, Splendid Asia, Australia and New Zealand Adventurous, Romantical Europe, and the Marvelous U.S. and Canada are valid. Based on questionnaire data Junglelicious Africa, Splendid Asia, Australia and New Zealand Adventurous, Romantical Europe, and the Marvelous U.S. and Canada the results are reliable.

Sustainability Analysis of Tour Package Performance
Based on the assessment of the status of sustainability performance management package tour on the Tour and travel agent company performed using rapid analysis appraisal index for sustainable performance package tour, generating an index value of the status of sustainability performance management tour package on each dimension that is, the dimensions during the trip, before the trip, other dimensions, and tour leader.

Each dimension or multidimensional value "stress" that is smaller than the value of 2.5%, meaning the better the quality of the results of the analysis undertaken. From the value of R2 (coefficient of determination) indicates the quality of analytical results the better, because the value of R2 (coefficient of determination) the greater (closer to 1). Thus of the two parameters (value of "stress" and R2) indicate that all attributes used in the analysis of the management of sustainability performance is relatively good tour packages in explaining the dimensions analyzed. Monte Carlo analysis in MDS analysis is used to see the effect of making the error score on each attribute in each dimension that is caused by faulty procedures or an understanding of the attributes, variation in scoring due to differences in opinion or assessment by a different researcher, the stability of the MDS analysis, fault enter data or no data is lost, and the value of "stress" that is too high. The final results of MDS analysis of the sustainability index has a high level of confidence

Table 2.  The results of Monte Carlo Analysis to evaluate MDS on 95% Confidence Interval

Dimension
Paket Tour
Statistic Value
Result on 95% Confidence Interval
Stress Value
R2 (determination coefficient)
MDS
Monte Carlo
Different
Before Trip
Junglelicious Africa
0.165883660
0.94292295
49.429
48.996
0.433
Splendid Asia
0.194155797
0.91238451
75.244
74.875
0.369
Adventurous Australia and NZ
0.189632414
0.911200454
71.237
72.114
0.877
Romantical Europe
0.125815642
0.921940148
50.289
51.324
1.035
Marvelous US and Canada
0.138456542
0.951246187
53.262
52.887
0.375
During Trip
Junglelicious Africa
0.170017764
0.935396373
69.244
68.549
0.695
Splendid Asia
0.197451412
0.912052415
63.412
62.321
1.091
Adventurous Australia and NZ
0.125149148
0.931254046
61.355
60.783
0.572
Romantical Europe
0.101321461
0.987126146
55.987
54.768
1.219
Marvelous US and Canada
0.112514817
0.962156472
57.023
56.631
0.392
Other Dimensions
Junglelicious Africa
0.163387761
0.947272778
65.318
64.552
0.766
Splendid Asia
0.114141941
0.942874113
52.417
51.664
0.753
Adventurous Australia and NZ
0.169816414
0.928455875
52.365
51.373
0.992
Romantical Europe
0.149784756
0.963121841
51.478
50.743
0.735
Marvelous US and Canada
0.177891942
0.931241875
55.202
54.594
0.608
Tour leader
Junglelicious Africa
0.167298272
0.932668686
75.645
76.218
0.573
Splendid Asia
0.198752417
0.915896434
77.089
78.136
1.047
Adventurous Australia and NZ
0.117967514
0.978451246
75.449
74.659
0.790
Romantical Europe
0.204821201
0.919151641
72.457
72.865
0.408
Marvelous US and Canada
0.141564927
0.939541646
70.149
71.187
1.038

Simulation of Tour Package Performance Management Model
Based on the analysis of the interest level among the factors in the need analysis and sustainability analysis, obtained factors that have a high impact on system performance with low-dependencies among factors. Furthermore, similar factors are combined, so we get the key factors/determinants. The importance of these factors then analyzed again by using the Prospective Program.
Simulation of the three scenarios can be summarized in the diagram model simulation results of the performance management of sustainable tour package as shown in the following table:

Table 3.  Simulation scenarios of performance management models for each tour package

Tour Package
Existing Condition of Package Tour Performance
Performance Simulation of Sustainable Tour Package Management
Optimistic Scenario
Moderate Scenario
Pessimistic Scenario
BT
DT
OD
TL
BT
DT
OD
TL
BT
DT
OD
TL
BT
DT
OD
TL
Junglelicious Africa
49.4
69.2
65.3
75.6
61.4
75.1
75.1
79.6
44.6
63.8
60.4
70.8
40.3
55.6
51.5
62.9
Splendid Asia
75.2
63.4
52.4
77.1
78.4
71.8
65.5
80.0
68.5
57.0
47.1
69.4
63.0
53.4
44.7
67.9
Adventurous Australia
49.4
69.2
65.3
75.6
76.9
75.4
68.8
79.3
65.7
57.2
46.6
66.9
59.9
54.3
42.7
56.7
Romantical Europe
50.3
56.0
51.5
72.5
61.7
71.5
64.4
77.1
45.3
64.5
48.4
69.7
42.9
48.0
45.3
58.5
Marvelous US & Canada
53.3
57.0
55.2
70.1
62.1
69.2
67.6
75.8
42.6
65.3
50.4
72.7
42.6
52.3
48.0
58.9
note:   BT = Before Trip,  DT = During Trip,  OD = Other Dimensions,  TL = Tour Leader

Research Implications
The performance of sustainable management of tour package in the Tour and travel agent company started with a performance appraisal carried out by enterprise customers. Performance appraisals are conducted to obtain the status of the condition index value of sustainability management tour package of tour and travel agent company at this time. Then do the stakeholders assessment in order to get the needs of each actor in the sustainable management of tour package. The results of the integration between the needs analysis and sustainability analysis showed the factors that influence the sustainable management of the performance of the tour package. This factor is called the "entry point" in a model of sustainable management of the performance of the tour package. The results of the integration between the needs analysis and sustainability analysis package tour then get "entry point" and can be searched factors drive / key will be the basis for ongoing performance of tour package.

Table 4.   Driving / key factors as the basis for sustainable management performance of the tour package for the next 5 years condition

Tour Package

Key / Driving Factors

Junglelicious Africa

·         tour package diversity

·         hotel

Splendid Asia

·         tour package diversity
·         tour leader who put interests of the team

Adventurous Australia

·         tour package diversity

·         hotel

Romantical Europe

·         Precision of information

·         tour leader who put interests of the team

Marvelous US & Canada

·         Responsibility of tour leader

·         Precision of information


Based on the selected time frame (5 years ahead) simulated scenarios that will occur in the context of achieving sustainable management of the performance tour package with the trend of the optimistic scenario. The scenario simulated is an optimistic scenario, moderate, and pessimistic. The resulting recommendations will depend on the scenario that occurred.


CONCLUSIONS

This study has been successfully performed observations on the tour and travel agent package as a study object, which are the tour package of Junglelicious Africa, Splendid Asia, Australia and New Zealand Adventurous, Romantical Europe, and the Marvelous U.S. and Canada. While these attributes are a reflection of the fourth dimension are dimension of before the trip, during the trip, tour leader, and others. These study lead to index value of the status of sustainability performance management on the tour package.
The results of statistical validation tests showed that the sustainability index method is relatively good for use as a performance evaluation tool tour package. In the management of sustainable performance package tour in a Tour and travel agent company should refer to factors drive / key. The driving factor is a factor that has a high impact on system performance with a low dependency factor.
Stage model of performance management are the identification of sustainable tour package of factors, stakeholder assessment, determination of entry points, the preparation of scenarios, and implementation of simulation models in order to achieve the strategic objectives of the management performance of sustainable tour package. Conceptual model described in the operational model in accordance with the results of analysis for the performance of the tour package.

Recomendations
Comprehensive assessment of the performance evaluation of the tour package tour and travel agent company both dimensions before the trip, during the trip, tour leader, and others need to be done periodically so that the value of the actual performance of the tour package can be known and relied upon in making decisions related with performance management package tours.
Assessment of sustainability performance tour package in the object study Tour and travel agents should be conducted in a separate company for the tour package Junglelicious Africa, Splendid Asia, Australia and New Zealand Adventurous, Romantical Europe, and the Marvelous U.S. and Canada. Index value based on the tour package will give you a specific performance on the tour package
Recommendations for Junglelicious Africa tour package if moderate or pessimistic scenarios occur: 1) Need to increase the diversity of the tour package offered in accordance with the development of world tourism in order to take the opportunity to develop variations of attractions, so the company can meet customer needs. Increased diversity will require staff tour package tour and travel agent company to continually develop the company's products. 2) The need to diversify so that the more varied the hotel offered to customers. This increase not only in quantity but in quality, in terms of constantly looking for a potential hotel or maintained its quality and maintain cooperation with the hotels used on tour. The tour leader responsibility to design a fun tour and satisfying customer, in a tour, hotel accommodation is one of the most important, therefore to consider hotels that would be used on tour. Tour leader must ensure the tour according to plan, this includes the task of the tour leader for check-in until check-out hotel.
Recommendations for Splendid Asia tour package in case of moderate or pessimistic scenarios occurs: 1) Need to increase the diversity of the tour package offered in accordance with the development of world tourism in order to take the opportunity to develop variations of tour package attractions. 2) Need to increase the ability of the tour leader in promoting common interests. This ability affects the dimensions before the trip, especially the handling time at Jakarta airport, the tour leader should gather participants, counting the number of participants, organize and calculate the amount of luggage, get boarding pass, passport and boarding passes to distribute to the participants, announce the duration of flight and transit to the participants, led participants in the boarding gate and always make sure the participants are complete before entering into the plane. In carrying out its duties, the tour leader should be objective and must not give priority to private interests. Tour leader is an important factor in gaining customer satisfaction because of the performance of the tour leader, tour operations that distinguish the company with competitors. Performance tour leader not only affect the valuation of customers, customer loyalty and word of mouth communication, but also as a competitive factor.
Recommendations for Adventurous Australia and New Zealand tour package if moderate or pessimistic scenarios occur: 1) Need to increase the diversity of the tour package offered. 2) The need to diversify so that the more varied the hotel offered to customers.
Recommendations for Romantical Europe tour package if moderate or pessimistic scenarios occurs: 1) Need to increase the clarity / accuracy of information provided. When a customer or prospective tour participants want to book a package tour, companies need to provide direction on the current state of destination, as well as travel insurance, language used, the local currency, and other provisions that are considered important according to local policy objectives. Submission information can be by telephone if the customer or prospective participants tour package tour booked by phone. Staff on duty at the office tour and travel agent company serving all requests for information regarding travel arrangements online, domestic tours, overseas tours, shore excursions, meetings, incentive travel, conference and exhibition. Therefore, it is important to ensure the clarity / accuracy of information provided to prospective tour participants, customers, or all agencies and related companies. Important task for tour staff, hotel staff and packages, and incentive staff to constantly update information on attractions or tour package in order to keep the information up-date and provide all information related to travel to prospective tour participants. A variety of information required can be accessed via the company's website, telephone, or customers or prospective tour participants can visit the office. Therefore it is necessary to update the information or complete the tour, attraction or tour package. The information provided should also be guaranteed for accuracy, because if the information given to the needs of prospective tour participants, customers, or parties related to tourist travel are not right or wrong, it will certainly interfere with the preparation of your tour company can even lose the trust of customers.  2) Need to increase the ability of the tour leader in promoting common interests.
Recommendations for the tour package Marvelous U.S. and Canada if moderate or pessimistic scenarios occurs: 1) Being a tour leader responsibilities as a representative of the company to collaborate closely with all agencies and related companies, understand the contents of the tour product that will be taken, it can be entertaining participants can work together as a team, able to lead different types of characteristics of participants, knew the terrain being visited and knowledge about the objects, and responsible for making the tour to be fun. Tour leader must have leadership skills, can communicate well and good, and can use common sense. Tour leader must be able to maintain the achievements so far have been about as well as personal awareness to constantly improve themselves, 2) Need to increase the clarity / accuracy of information provided.  
Each stakeholder Tour and travel agent company should take an active role in a comprehensive manner to performance management in an integrated tour package, so that the performance management of sustainable tour package can be realized.


REFERENCES

Borner Katy and Kevin Boyack. (2010). Mapping Interdisciplinary Research. Oxford Handbook of Interdisciplinary. Oxford University Press.
Fauzi, Akhmad dan Suzy Anna. (2005). Fisheries and Marine Resources Modeling for Policy Analysis. PT. Gramedia Pustaka Utama, Jakarta.
Godet Michel. (2004). Scenarios and Strategies a Toolbox for Problem Solving. Lipsor. Paris
Hartrisari. (2007). Dynamic System, Sistem Concept and Modelling for Industrial and Environmental. Biotrop. Bogor
Kesrul M. (2003). Tourism Travel Operational Management. Grasindo. Jakarta
Middleton Victor T. C, Alan Fyall and Michael Morgan. (2009) Marketing in Travel and Tourism 4 ed, Elsevier Ltd
Mulyadi A.J. (2009). Tourism and Travel. Grafindo, Jakarta
Pitana I.G., Diarta I.K.S. (2009), Tourism Introduction, Andi Offset, Yogyakarta
Simamora, B. (2005). Marketing Multivariate Analysis. PT. Gramedia Pustaka Utama, Jakarta.
Susilo, BB. (2003). Sustainability of Small Islands Development; Case Study Panggang and Pari Island, Kepulauan Seribu, DKI Jakarta, Disertasi, IPB.
UN World Tourism Organization (WTO) (2007). Tourism 20:20 Vision. UNWTO Publications Department
UNWTO. (2011). World Tourism Barometer. UNWTO Publications Department
Yair Levy and Timothy J. Ellis. (2006). A Systems Approach to Conduct an Effective Literature Review in Support of Information Systems Research. Informing Science Journal

Tidak ada komentar:

Posting Komentar