Talason, Polpisit, Urasa Promta, and Chumnian Poollaharn. 2023. “Development of an Appropriate Area-Based Internal Supervision Model under the Office of Mahasarakham Primary Educational Service Area 1”. Journal of Roi Et Rajabhat University 17 (1):231-40. https://so03.tci-thaijo.org/index.php/reru/article/view/254309.