ชรารัตน์ อ, น้อยสมบัติ ห. THE RELATIONSHIP BETWEEN SCHOOL PRINCIPALS COMPETENCY AND THE EFFECTIVENESS OF SCHOOLS UNDER THE OFFICE OF ROI-ET PRIMARY EDUCATIONAL SERVICE AREA 3. J Roi Et [internet]. 2017 Dec. 31 [cited 2026 Sep. 12];11(2):173-82. available from: https://so03.tci-thaijo.org/index.php/reru/article/view/176361