Nakkoed, Thanayuth, and Piyanart Boonmepipit. “Core Competencies of School Administrators under Bangkok Office of Learning Encouragement”. Journal of Humanities and Social Sciences, Rajapruk University 12, no. 2 (August 29, 2026): 280–294. accessed September 10, 2026. https://so03.tci-thaijo.org/index.php/rpu/article/view/299998.