Supaphom K, Podapol C. 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. rtnb [internet]. 2023 Dec. 30 [cited 2025 Apr. 7];5(3):226-42. available from: https://so07.tci-thaijo.org/index.php/rtnb/article/view/3759