Abdullah, Dr.Adel, and Abdullah Yonis. “Leadership Ethics and Contributions in Voice of Employees: Analysis of Facts and a Model Presentation in Department of Business Administration College of Administration and Economics”. TANMIYAT AL-RAFIDAIN 34, no. 106 (January 1, 2012): 9–25. Accessed September 8, 2025. https://tanmiyat.uomosul.edu.iq/index.php/tanmiyat/article/view/30193.