Hassan, Karwan Kamal. 2021. “Organizational Citizenship Behaviors and Its Role in Enhanceing Strategic Success An Analytical Study of the Opinions of a Sample of Department Heads in Private Universities in Erbil”. Tikrit Journal of Administrative and Economic Sciences 17 (53, 1):216-39. https://doi.org/10.25130/tjaes.17.53.1.14.