Tonglang, T., and M. Wattanachaiyot. “The Development of Kan Exercise Package for Prathom Suksa 4 Students at Tedsaban 1 Sukawittayakorntungtrongjit School under Yasothorn Municipality Division of Education”. Ubon Ratchathani Journal of Research and Evaluation, vol. 5, no. 2, Aug. 2021, pp. 101-7, https://so06.tci-thaijo.org/index.php/ubonreseva/article/view/251026.