Yenyuak, C., and C. Yenyuak. “Attitudes of People towards Public Service Quality: A Case study of Lak Hok Subdistrict Municipality”. Doctor of Philosophy in Social Sciences Journal, vol. 4, no. 2, Aug. 2025, pp. 1-14, https://so08.tci-thaijo.org/index.php/dpssj/article/view/4859.