Ruangtam, W. “GUIDELINES FOR SKILLS DEVELOPMENT OF SCHOOL ADMINISTRATORS IN THE 21st CENTURY UNDER LOEI PRIMARY EDUCATIONAL SERVICE AREA OFFICE 1”. Journal of Srilanchang Review, vol. 9, no. 2, Dec. 2023, pp. 57-70, https://so06.tci-thaijo.org/index.php/jslc/article/view/270065.