Supaphom, Keeratikorn, and Chakgrit Podapol. “Factors Effective Happiness at Work of Teachers in Schools Under Loei Primary Educational Service Area Office 3: Factors Effective Happiness at Work of Teachers in Schools Under Loei Primary Educational Service Area Office 3”. RATANABUTH JOURNAL 5, no. 3 (December 30, 2023): 226–242. accessed April 8, 2025. https://so07.tci-thaijo.org/index.php/rtnb/article/view/3759.