Promduang, Thanakorn. “Morale in the Operation of Personnel in the Southern Border Provinces Administrative Center: Morale in the Operation of Personnel in the Southern Border Provinces Administrative Center”. Lawarath Social E-Journal 3, no. 1 (April 29, 2021): 1–14. accessed April 25, 2025. https://so04.tci-thaijo.org/index.php/lawarathjo/article/view/246008.