Katiyod, Korakod, Sekchai Chompoonuch, Teerapat Prasomsuk, and Akaradech Yompakdee. “Competencies of administrators who promote excellence in educational institutions under the Office of the Secondary Education Service Area of Nan”. MCU Haripunchai Review 9, no. 4 (December 29, 2025): 302–318. accessed September 24, 2026. https://so04.tci-thaijo.org/index.php/JMHR/article/view/aa-23.