Sriyoo P, Thanompongchart P, Sudrung J. Strategies for Instructional Supervision in Secondary Schools under the Office of the Secondary of the Secondary Educational Service Area 7. OJED [internet]. 2021 May 14 [cited 2026 Aug. 27];16(1):OJED1601011(15 pages). available from: https://so01.tci-thaijo.org/index.php/OJED/article/view/245058