“Pengelompokkan Pendonor Darah Berdasarkan Golongan Darah Di PMI Kabupaten Langkat Menggunakan Metode Clustering K-Means”. 2025. Fusion : Journal of Research in Engineering, Technology and Applied Sciences 2 (1): 40-48. https://ejurnal.faaslibsmedia.com/index.php/fusion/article/view/261.