เพชรสมบัติ รศ.ดร.พิมลพรรณ. “Attributes of Leadership of Educational Administrators”. Education journal Faculty of Education, Nakhon Sawan Rajabhat University 4, no. 2 (August 31, 2021): 100–105. accessed October 9, 2026. https://so02.tci-thaijo.org/index.php/edunsrujo/article/view/250350.