Jongtaengklang, S., & Sod-ium , P.- on. (2023). Factor Analysis of Ethical Leadership of School Administrators under Secondary Educational Service Area Office Loei Nong Bua Lamphu: Factor Analysis of Ethical Leadership of School Administrators under Secondary Educational Service Area Office Loei Nong Bua Lamphu. RATANABUTH JOURNAL, 5(1), 540–557. retrieved from https://so07.tci-thaijo.org/index.php/rtnb/article/view/2705