Putra, Muhammad Bagus Rizaldy, and Brury Trya Sartana. “IMPLEMENTASI ELECTRONIC CUSTOMER RELATIONSHIP MANAGEMENT UNTUK MENINGKATKAN HUBUNGAN BAIK ORANG TUA SISWA (STUDI KASUS SMP AL-BAYAN ISLAMIC SCHOOL)”. IDEALIS : InDonEsiA journaL Information System 1, no. 3 (July 3, 2018): 210–216. Accessed June 2, 2025. https://jom.fti.budiluhur.ac.id/IDEALIS/article/view/579.