Yotenka, Rahmadi, and sekti kartika dini. “Clustering of PDQ Participant Student in Faculty of Mathematics and Natural Sciences UII Using the ROCK Method”. EKSAKTA: Journal of Sciences and Data Analysis 3, no. 2 (September 7, 2022). Accessed November 21, 2024. https://journal.uii.ac.id/Eksakta/article/view/23924.