Thonarat, Pichayaporn, and Ariya Pongsiri. “Guidelines for Developing the Competencies of Teachers in Charge of School Procurement in Kalasin Province”. Journal of Human and Society, Sisaket Rajabhat University 10, no. 1 (June 25, 2026): 26–43. accessed October 14, 2026. https://so08.tci-thaijo.org/index.php/jhuso/article/view/6025.