Suwan-achariya, C. ., & Latae , K. . (2017). Size and Mean to Reduce Transaction Costs of Opportunistic Behavior: Case Study in the Dropped and Repeating Courses. JOURNAL OF SOUTHERN TECHNOLOGY, 11(2), 145–152. Retrieved from https://so04.tci-thaijo.org/index.php/journal_sct/article/view/94711