Chunpen, S., Khajornpanyapaisan, K., & Rittilun, S. (2026). A Study of Guidelines for Leadership Characteristics Development in School Administrators of World-Class Standard Schools under the Office of Secondary Educational Service Area Kalasin. Journal of Education Rajabhat Maha Sarakham University, 23(1), 227–237. retrieved from https://so06.tci-thaijo.org/index.php/edu-rmu/article/view/291337