Buasai, Thidawan, Prachitr Mahahing, and PhrakhrupaladBoonchuay Chotivungso. 2026. “Personnel Administration Based on the Sagahavatthu 4 Principles of School Administrators Under Khon Kaen Primary Educational Service Area Office 1”. Journal of Graduate MCU KhonKaen Campus 13 (1):396-406. https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/284793.