Tume Atua, T., Lateef Dahham, D. y Salim Mesr, I. (2019) «The Role of Quality of Service as a Tool to Achieve Relationship Marketing. An Empirical Study of a Sample of Mobile Phone Company (Asiacell) Customers in Anbar Governorate», Opción, 350, pp. 1173-1198. Disponible en: https://produccioncientificaluz.org/index.php/opcion/article/view/31944 (Accedido: 2mayo2024).