Khattab MM, Werdee NM. Service quality and its impact on brand promotion: A descriptive study of a sample of Asiacell customers in Salah El-Din. Tikrit J. Admin. Econ. Sci. [Internet]. 2023 Sep. 30 [cited 2025 Nov. 9];19(63, 2):146-65. Available from: https://www.tjaes.org/index.php/tjaes/article/view/1135