Bonrod, Tipsukon, and Mattana Wangthanomsak. “The Servant Leadership of School Administrator and Quality of Work Life of Teacher under the Secondary Educational Service Area Office 9”. Journal of Arts Management 5, no. 2 (July 5, 2021): 486–500. Accessed May 18, 2024. https://so02.tci-thaijo.org/index.php/jam/article/view/248920.