Rachai Namwongsa และ Surachat Noirit. (2023) The Development of a Program to Enhance the Ethical Leadership Qualities of Teachers under the Supervision of the Secondary Educational Service Area Office Khon Kaen. <i>Interdisciplinary Academic and Research Journal</i>, <i>3</i>(4), 271-290.Rachai Namwongsa และ Surachat Noirit. "The Development of a Program to Enhance the Ethical Leadership Qualities of Teachers under the Supervision of the Secondary Educational Service Area Office Khon Kaen". Interdisciplinary Academic and Research Journal 3 (2023):271-290.Rachai Namwongsa และ Surachat Noirit. The Development of a Program to Enhance the Ethical Leadership Qualities of Teachers under the Supervision of the Secondary Educational Service Area Office Khon Kaen. DR.KEN Institute of Academic Development and Promotion.:ม.ป.ท. 2023.