Chobphon P. The Development of Self-Directed Learning Characteristics of Students in Tourism Industry Classroom Through Research-Based Learning. kasetsart J. Soc. Sci. [internet]. 2006 Dec. 31 [cited 2026 Sep. 12];27(2):189-98. available from: https://so04.tci-thaijo.org/index.php/kjss/article/view/246381