Nongsai, P. W., W. Sangthima, W. Kaewoyaem, and C. Bodeerat. “System of Positions and Government Compensation: System of Positions and Government Compensation”. RATANABUTH JOURNAL, vol. 5, no. 1, Apr. 2023, pp. 649-63, https://so07.tci-thaijo.org/index.php/rtnb/article/view/2429.