Indra Nasution, et al. “Application of the K-Nearest Neighbor Algorithm in the Data Mining Process to Predict Drug Sales at Pratama Haji Medan-Pancing Clinic”. Jurnal Publikasi Ilmu Komputer Dan Multimedia, vol. 4, no. 2, May 2025, pp. 136-47, https://journalcenter.org/index.php/jupikom/article/view/4081.