Ramadhan, Hafid, Mohammad Rizal Abdan Kamaludin, Muhammad Alfan Nasrullah, and Dwi Rolliawati. “Comparison of Hierarchical, K-Means and DBSCAN Clustering Methods for Credit Card Customer Segmentation Analysis Based on Expenditure Level”. Journal of Applied Informatics and Computing 7, no. 2 (December 5, 2023): 246-251. Accessed November 21, 2024. https://jurnal.polibatam.ac.id/index.php/JAIC/article/view/5790.