Ananda R, Serasi Ginting B, Ria Pasaribu T. Data Mining Grouping Of Drug Users By Age Using Clustering Method (Case Study: BNN Binjai City). JISTR [Internet]. 2022 May 31 [cited 2025 Aug. 3];1(2):103-11. Available from: https://journal.aira.or.id/index.php/jistr/article/view/139