Promthong, Thanawat, and Worrapong Trakarnsirinont. “The Study of Citizenship: Case Study of People in Umong Subdistrict, Mueang District, Lamphun Province”. Political Science and Public Administration Journal 8, no. 2 (December 29, 2017): 103–127. accessed September 12, 2026. https://so05.tci-thaijo.org/index.php/polscicmujournal/article/view/107763.