เข็มเพชร น. “The Ability of Adaptation of the Undergraduate Freshmen in College of Politics and Governance,Mahasarakham University”. Journal of Politics and Governance, vol. 8, no. 2, Aug. 2018, pp. 186-99, https://so03.tci-thaijo.org/index.php/jopag/article/view/147208.