Martowinangun, Kasino, Johni Setiady Pasaribu, and Jusuf Nurdin. “Digital Customer Relationship Management in Improving Service Quality Through E-Commerce Systems ”. Jurnal Ekonomi Manajemen Sistem Informasi 6, no. 3 (February 14, 2025): 1696–1704. Accessed February 22, 2025. https://dinastirev.org/JEMSI/article/view/4074.