Nainggolan, Rena, and Eviyanti Purba. “The Cluster Analysis of Online Shop Product Reviews Using K-Means Clustering”. Data Science: Journal of Computing and Applied Informatics 4, no. 2 (July 31, 2020): 111-121. Accessed December 22, 2024. https://talenta.usu.ac.id/JoCAI/article/view/2855.