Kunavetchakij, Boonlada, Norakamon Laorodphan, and Phakaraphon Sangngern. “Study on Personnel Potential for Preparation to Enter into a Happy Organization in the Lower Northern Cluster (Phitsanulok, Phichit, Phetchabun and Sukhothai)”. Journal of Politics and Governance 10, no. 1 (April 9, 2020): 191–223. Accessed April 27, 2024. https://so03.tci-thaijo.org/index.php/jopag/article/view/241521.