Buasai, T., P. Mahahing, and P. Chotivungso. “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, vol. 13, no. 1, Mar. 2026, pp. 396-0, https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/284793.