Subruangthong, Waraporn, Litsak Subruangthong, and Kamolthida Dansuputra. “A Study on the Problems on Policy Implementation in Small Schools Under Uthai-Thani Primary Educational Service Area Office 1”. Rajapark Journal 15, no. 40 (May 17, 2021): 292–306. Accessed May 3, 2024. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/251295.