Joseph Teguh Santoso, Sri Jumini, Gita Widi Bhawika, Daniel Susilo, and Danny Wibowo. “Unsupervised Data Mining Technique for Clustering Library in Indonesia”. Elementary Education Online 20, no. 1 (March 23, 2021): 699–707. Accessed January 15, 2025. https://ilkogretim-online.org/index.php/pub/article/view/917.