SIRIMART, S., and P.- on . Sodium. “Ethical Leadership Affecting Efficiency of Personnel Management of Schools Under Loei Primary Education Service Area Office 1: Ethical Leadership Affecting Efficiency of Personnel Management of Schools Under Loei Primary Education Service Area Office 1”. RATANABUTH JOURNAL, vol. 5, no. 1, Apr. 2023, pp. 558-73, https://so07.tci-thaijo.org/index.php/rtnb/article/view/2682.