ปิ่นทอง พ. Effective Leadership of School Administrators Affecting Teacher Empowerment under the Office of Secondary Educational Service Area 25. EDGKKUJ [internet]. 2018 May 19 [cited 2025 Apr. 28];11(3):153-6. available from: https://so02.tci-thaijo.org/index.php/EDGKKUJ/article/view/124348