PENGEMBANGAN ELECTRONIC CUSTOMER RELATIONSHIP MANAGEMENT SEBAGAI PROGRAM RETENSI ALUMNI UNIVERSITAS SERANG RAYA BERBASIS ANDROID. ProTekInfo(Pengembangan Riset dan Observasi Teknik Informatika), [S. l.], v. 7, p. 1–6, 2020. DOI: 10.30656/protekinfo.v7i.5025. Disponível em: https://e-jurnal.lppmunsera.org/index.php/ProTekInfo/article/view/5025. Acesso em: 9 oct. 2026.