Anpanya K, Phoojomjit P. The Guidelines for Development the Servant Leadership of School Administrators under the Mahasarakham Primary Educational Service Area Office 3. IARJ [internet]. 2024 Apr. 5 [cited 2026 Aug. 29];4(2):241-58. available from: https://so03.tci-thaijo.org/index.php/IARJ/article/view/274652