Sitsira-at, S. ., Jungate, P. ., Kuprasert, N. ., & Peatkadee, V. . . (2019). THE EFFECTS OF POSITIVE THINKING ENHANCING ACTIVITIES IN GRADUATE DIPLOMA PROGRAM IN TEACHING PROFESSION STUDENTS. Journal of Humanities and Social Sciences Thonburi University, 13(1), 146–153. Retrieved from https://so03.tci-thaijo.org/index.php/trujournal/article/view/166674