ALOKLA, M.; ALKHATEEB, M.; ABBAD, M.; JABER, F. Customer Relationship Management: A Review and Classification. Transnational Marketing Journal, London, UK, v. 7, n. 2, p. 187–210, 2019. DOI: 10.33182/tmj.v7i2.734. Disponível em: https://journals.tplondon.com/tmj/article/view/734. Acesso em: 23 jan. 2022.