Khattab, M. M. and Werdee, N. M. (2023) “Service quality and its impact on brand promotion: A descriptive study of a sample of Asiacell customers in Salah El-Din”, Tikrit Journal of Administrative and Economic Sciences, 19(63, 2), pp. 146–165. doi: 10.25130/tjaes.19.63.2.8.