Subruangthong, W., Subruangthong, L., & Dansuputra, K. (2021). A Study on the Problems on Policy Implementation in Small Schools Under Uthai-Thani Primary Educational Service Area Office 1. Rajapark Journal, 15(40), 292–306. retrieved from https://so05.tci-thaijo.org/index.php/RJPJ/article/view/251295