Tongwisate P, Thinsandee T, Phansawang J. Personnel Administration Based on Six Perfections of Administrators in Schools under the Secondary Educational Service Area Office 27. AJMBU [internet]. 2020 Mar. 27 [cited 2026 Aug. 28];10(1):845-57. available from: https://so01.tci-thaijo.org/index.php/AJMBU/article/view/227424