Nakkoed, T., and P. Boonmepipit. “Core Competencies of School Administrators under Bangkok Office of Learning Encouragement”. Journal of Humanities and Social Sciences, Rajapruk University, vol. 12, no. 2, Aug. 2026, pp. 280-94, https://so03.tci-thaijo.org/index.php/rpu/article/view/299998.