Fahmi Rizky Nugraha, Deny Purnama, and Agam Patra. “Dampak Customer Relationship Management Terhadap Penjualan”. Prosiding Seminar SeNTIK, vol. 2, no. 1, Sept. 2022, pp. 22-29, https://ejournal.jak-stik.ac.id/index.php/sentik/article/view/3143.