Ali, Nizar M., Jagar M. Ismail, and Avan Y. Haji. 2017. “The Business Ethics and Its Role in Achieving the Performance Efficiency ‘Analytical Study of the Views of a Sample to the Staff in the Presidency of University of Zakho ’”. Humanities Journal of University of Zakho 5 (3):814-25. https://doi.org/10.26436/hjuoz.2017.5.3.374.