Duangthisan, A., Bunprakopwong, P. and 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), pp. 86–96. available at: https://so05.tci-thaijo.org/index.php/researchjournal-lru/article/view/245478 (accessed: 30 September 2026).