Sritengtong P. The Development of Self-Discipline Test of Students Sports School Under Institute of Physical Education Ministry of Tourism and Sports. J.TNSU [Internet]. 2022 Mar. 2 [cited 2024 May 20];7(2):119-30. Available from: https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/256464