Duangthisan, A., Bunprakopwong, P., & Wongprachya, S. (2021). Development Cooperation Among Region, Locality, and Area to Strengthen Community by Applying the Philosophy of Sufficiciency Economy in Kaeng Khro Sub-District Municipality, Kaeng Khro District, Chaiyaphum. Research and Development Journal, Loei Rajabhat University, 16(56), 86–96. retrieved from https://so05.tci-thaijo.org/index.php/researchjournal-lru/article/view/245478