Muhammad, R.S. and M. AL-Murad, N.Y. 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 (Dec. 2020), 258–277. DOI:https://doi.org/10.25130/tjaes.16.52.2.14.