Andriana, Anna. “PENENTUAN JENIS PROMOSI MENGGUNAKAN PENDEKATAN CUSTOMER RELATIONSHIP MANAGEMENT (CRM)”. Majalah Ilmiah UNIKOM 15, no. 2 (December 11, 2017). Accessed May 6, 2024. https://ojs.unikom.ac.id/index.php/jurnal-unikom/article/view/563.