Sinsiri, Waraporn, and Chalabhorn Suwansumrit. “The Academic Administration of School under The Secondary Educational Service Area Office Nonthaburi”. Journal of Humanities and Social Sciences, Rajapruk University 7, no. 3 (December 25, 2021): 129–146. Accessed May 15, 2024. https://so03.tci-thaijo.org/index.php/rpu/article/view/257346.