Cristover, Ronaldo, Hapnes Toba, and Bernard Renaldy Suteja. “Segmentation and Formation of Customer Regression Model Based on Recency, Frequency and Monetary Analysis”. Jurnal Teknik Informatika dan Sistem Informasi 8, no. 2 (August 31, 2022): 474 –. Accessed April 12, 2025. http://114.7.153.31/index.php/jutisi/article/view/5075.