Oktavia, Tanty. “Analisis Dan Perancangan Operasional Sistem Berbasiskan CRM (Studi Kasus Pada PT Terang Dunia Internusa)”. ComTech: Computer, Mathematics and Engineering Applications 1, no. 2 (December 1, 2010): 1083–1096. Accessed May 11, 2025. https://journal.binus.ac.id/index.php/comtech/article/view/2670.