Puichumpol, Piyorot, Wilaypin Kaewpeng, and Chailikit Soipetkasem. “A STUDY ON SPORT ACHIEVEMENT MOTIVATION IN STUDENTS OF SOUTHERN SPORTS SCHOOL”. Academic Journal of Thailand National Sports University 11, no. 2 (May 1, 2019): 275–289. accessed September 20, 2026. https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/244720.