Kusumawardhani, Arie, and Bruri Trya Sartana. 2018. “ANALISA DAN PERANCANGAN MOBILE CUSTOMER RELATIONSHIP MANAGEMENT (M-CRM) BERBASIS ANDROID STUDI KASUS APLIKASI PEDULI SEKITAR”. IDEALIS : InDonEsiA JournaL Information System 1 (5):169-76. https://jom.fti.budiluhur.ac.id/IDEALIS/article/view/1001.