WIJAYA, C.; DYFAN; NOVIANI, M.; RAYMOND; YENDIARTI. Penerapan Customer Relationship Management (CRM) pada UMKM Mie Pangsit Ayam Bangka Mr.Ong Batam. El-Mal: Jurnal Kajian Ekonomi & Bisnis Islam, [S. l.], v. 5, n. 1, p. 390–404, 2023. DOI: 10.47467/elmal.v5i1.412. Disponível em: https://journal-laaroiba.com/ojs/index.php/elmal/article/view/412. Acesso em: 7 may. 2026.