Watthanakul, P. “Relationship Between Public Service Motivation, Job Satisfaction, Organizational Commitment, and Public Service-Oriented Behavior : The Cases of Local Administrative Organization Executives in Maha Sarakham, Roi Et, and Kalasin Provinces”. Journal of Research and Development Institute Rajabhat Maha Sarakham University, vol. 5, no. 2, Dec. 2018, pp. 75-90, https://so03.tci-thaijo.org/index.php/rdirmu/article/view/210495.