Saendee P, Sitthisuea T, Kakkaew V. The Guidelines for Improving the Performances of the Administrators of the Educational Institutes under the Primary Educational Service Area Office Surin 2. ambj [internet]. 2023 Aug. 28 [cited 2025 Dec. 9];8(2):250-61. available from: https://so06.tci-thaijo.org/index.php/ambj/article/view/264511