Promduang, T. “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, vol. 3, no. 1, Apr. 2021, pp. 1-14, https://so04.tci-thaijo.org/index.php/lawarathjo/article/view/246008.