Kesornpatumanunt, S., S. Sitthikul, P. Tongchai, and K. Panthong. “SPIRITUAL DEVELOPMENT OF HUMANITY FOR LEAPING INTO A NEW LIFE”. Academic Journal of Thailand National Sports University, vol. 11, no. 2, May 2019, pp. 306-20, https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/244941.