Sakdasak, W., Pranpa, M., & Srimarut, B. (2022). Development Guidelines for Sustainable Leadership and Academic Administrative Efficiency of School Administrators under the Secondary Educational Service Area Office Nonthaburi. Journal of Education Studies, 50(1), EDUCU5001008 (14 pages) doi: 10.14456/educu.2022.8. Retrieved from https://so02.tci-thaijo.org/index.php/EDUCU/article/view/255106