Meejan, Nattawan, and Sunthon Kohtbantau. “Academic Administration Status of Watsing District Non-Formal and Informal Education Centre, Chainat Province”. Journal of Research and Development Institute Rajabhat Maha Sarakham University 9, no. 3 (December 19, 2022): 117–128. Accessed May 5, 2024. https://so03.tci-thaijo.org/index.php/rdirmu/article/view/256638.