Muhammad, Ruaa Saad, and Najla Y. M. AL-Murad. 2020. “Customer Relationship Management and Its Contribution to Enhancing Marketing Quality: An Analytical Study of the Opinions of a Sample of Restaurant Managers in the Kurdistan Region”. Tikrit Journal of Administrative and Economic Sciences 16 (52, 2):258-77. https://doi.org/10.25130/tjaes.16.52.2.14.