HELMI, Y. R. . Peningkatan Kenyamanan Pelanggan dengan Sistem Customer Relationship Management (CRM) . Jurnal Sistim Informasi dan Teknologi, [S. l.], v. 2, n. 2, p. 59–64, 2021. DOI: 10.37034/jsisfotek.v2i2.23. Disponível em: http://www.jsisfotek.org/index.php/JSisfotek/article/view/23. Acesso em: 5 jul. 2025.