ธรรมยาฤทธิ์ ธรรมรัตน์, and บดีรัฐ โชติ. 2018. “Political Awareness Situation of Residents in Udon Thani Municipality”. Local Administration Journal 11 (2):55-71. https://so04.tci-thaijo.org/index.php/colakkujournals/article/view/130486.