Prathumthong, Suban. “A Model of Academic Administration Based on Philosophy of Sufficiency Economy for Primary Schools under the Office of Loei Primary Educational Service Area”. Chophayom Journal 29, no. 3 (December 29, 2018): 115–132. Accessed May 2, 2024. https://so01.tci-thaijo.org/index.php/ejChophayom/article/view/153764.