KHATTAB, Mahran. M.; WERDEE, Najah. M. 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, [S. l.], v. 19, n. 63, 2, p. 146–165, 2023. DOI: 10.25130/tjaes.19.63.2.8. Disponível em: https://www.tjaes.org/index.php/tjaes/article/view/1135. Acesso em: 9 nov. 2025.