“PERANCANGAN SISTEM INFORMASI CUSTOMER RELATIONSHIP MANAGEMENT (CRM) (Studi Kasus : CV. Berkah Utama)”. JOURNAL VISION TECHNOLOGY (V-TECH) , vol. 3, no. 1, May 2020, pp. 59-64, https://ejournal.unaja.ac.id/index.php/JVT/article/view/690.