Vittayaprapat, Natcharee, and Somtop Thitathun. “MANAGEMENT GUIDELINES FOR TAEKWONDO SCHOOLS IN THAILAND”. Academic Journal of Thailand National Sports University 14, no. 3 (August 22, 2022): 179–190. Accessed April 27, 2024. https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/252149.