Ternsakes A, Chapanya Y. Instructional Leadership of School Administrators Affecting Teaching Efficiency of Teachers Under the Yasothon Primary Educational Service Area Office 1. J Roi Et [Internet]. 2020 Dec. 13 [cited 2024 Apr. 20];14(3):199-207. Available from: https://so03.tci-thaijo.org/index.php/reru/article/view/236281