Laohavichien, Uthai, Suwannee Sangmahachai, and Chutharat Vorapratheep. “Factors Affecting the Quality of Doctor of Philosophy Program in Public Administration: A Case Study of the Faculty of Political Science, Ramkhamhaeng University”. Journal of the Association of Researchers 23, no. 2 (May 20, 2020): 167–177. accessed October 7, 2026. https://so04.tci-thaijo.org/index.php/jar/article/view/242083.