krisin, wasana, and Weeraphat Phattharakul. “Guidelines for Skill Development of Private School Administrators under the Office of Education, Phra Nakhon Si Ayutthaya Province”. Mahachula Academic Journal 11, no. 3 (December 4, 2024): 73–83. accessed August 28, 2026. https://so04.tci-thaijo.org/index.php/JMA/article/view/268918.