Nongkunsan, Mingkawn, Kritkanok Duangchatom, and Pongphop Phoojomjit. “The Model of Internal Supervision Development for School Administrators Under the Maha Sarakham Secondary Educational Area Office”. Interdisciplinary Academic and Research Journal 5, no. 6 (November 27, 2025): 1121–1138. accessed September 25, 2026. https://so03.tci-thaijo.org/index.php/IARJ/article/view/286478.