Penroj, K. ., and J. . Sarayuthpitak. “Effects of ‘Moderate Class More Knowledge’ Activity Management Using Muay Thai Arts on Self-Defense Skills of Lower Secondary School Female Students”. Journal of Education Studies, vol. 49, no. 1, Mar. 2021, p. EDUCU4901001 (12 pages) doi: 10.14456/educu.2021.1, https://so02.tci-thaijo.org/index.php/EDUCU/article/view/247839.