Thongmomram, C. ., and B.-A. . Phinaitrup. “Motivation Which Affects the Efficiency in Operation of the Personnel towards the Local Government in Khain-Sa District, Suratthani Province”. Journal of Politics and Governance, vol. 11, no. 1, Apr. 2021, pp. 118-39, https://so03.tci-thaijo.org/index.php/jopag/article/view/251703.