Niruttinanont phongphich, Chucheep S, Hankla C. The Need to Improve the Competency of School Administrators Under The Educational Opportunity Expansion Schools Under The Saraburi Primary Educational Service Area Office. วารสารวิชาการ มนส. เทพสตรี [internet]. 2022 Aug. 30 [cited 2025 Dec. 7];13(2):139-54. available from: https://so01.tci-thaijo.org/index.php/truhusocjo/article/view/254512