Heancharoen, Wongsakorn, Russadakorn Vinijkul, and Phitsanu Boonniyom. 2025. “Improving the Service Level of the Office of Academic Promotion and Registration Kamphaeng Phet Rajabhat University”. Journal of Graduate MCU KhonKaen Campus 12 (4):1-12. https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/279989.