Jamrus Y, Boonphadung S. Leadership Characteristics of School Administrators Affecting Teacher Performance Motivation Under the Secondary Educational Service Area Office Bangkok 1. IARJ [internet]. 2025 Jan. 10 [cited 2025 Apr. 17];5(1):525-42. available from: https://so03.tci-thaijo.org/index.php/IARJ/article/view/277954