PURWANTO, H.; YUNIANA, D.; HABIBY, M. E.; HERMAWAN, H. Penerapan Electronic Costumer Relationship Management Penjualan Berbasis Web. INTERNAL (Information System Journal), [S. l.], v. 4, n. 2, p. 71–83, 2021. DOI: 10.32627/internal.v4i2.261. Disponível em: https://jurnal.masoemuniversity.ac.id/index.php/internal/article/view/261. Acesso em: 29 apr. 2026.