Suryadibrata, Alethea, and Julio Young. “Algorithm Visualization for Teaching K-Means Clustering”. Ultimatics : Jurnal Teknik Informatika 12, no. 1 (July 2, 2020): 25-29. Accessed September 21, 2020. http://ejournals.umn.ac.id/index.php/TI/article/view/1523.