Sittisri, Namfon, and Chamnian Phollaharn. “GUIDELINES FOR DEVELOPMENT MANAGEMENT SKILLS OF SCHOOL ADMINISTRATORS IN THE 21ST CENTURY UNDER SURIN PRIMARY EDUCATION SERVICE AREA OFFICE 2”. Academic Journal of Mahamakut Buddhist University Roi Et Campus 12, no. 1 (April 11, 2023): 315–329. accessed October 13, 2026. https://so01.tci-thaijo.org/index.php/AJMBU/article/view/264705.