Charoensawang, Suradej, and Saengsuree Duangkhamnoi. “The Strategies for Educational Institutions Administration by Using the Professional Learning Community Concept Under the Office of Secondary Education Service Area 25”. Journal of Graduate MCU KhonKaen Campus 6, no. 3 (September 30, 2019): 248–264. Accessed May 18, 2024. https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/215484.