Muangnak, P., & Piampeuchana, N. (2024). The School Administrators’ Administrative Skills in the 21st Century Under Secondary Educational Service Area Office Khon Kaen. Journal of Graduate MCU KhonKaen Campus, 11(3), 221–234. retrieved from https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/270062