Saeed، A. A.، Ahmed، F. A.، و Omer، A. W. (2019). Evaluating the Process of Education Using Six Sigma in College of Administration and Economics at the University of Sulaimaniah. مجلة الإدارة والاقتصاد، س42, ع119 ، 95 - 107. مسترجع من http://search.mandumah.com/Record/987715
Saeed، Azad Abdalla، Farhad A. Ahmed، و Ameera Wali Omer. "Evaluating the Process of Education Using Six Sigma in College of Administration and Economics At the University of Sulaimaniah." مجلة الإدارة والاقتصاد س42, ع119 (2019): 95 - 107. مسترجع من http://search.mandumah.com/Record/987715