Kryyasit K, Thanompongchart P, Sudrung J. Guidelines for the Instructional Supervision of Teachers in Thai Language Departments in Secondary Schools under the Secondary Educational Service Area Office 4. OJED [Internet]. 2021 Apr. 5 [cited 2024 May 17];16(1):OJED1601008(12 pages). Available from: https://so01.tci-thaijo.org/index.php/OJED/article/view/245881