Audina, Puteri. 2018. “Analisa Data Mining Menggunakan Algoritma K-Means Clustering Pada PT. Kantor Jasa Penilaian Publik Immanuel, Jhonny Dan Rekan (KJPP-IJR) Semarang”. Information Technology and Telematics 7 (2). https://www.unisbank.ac.id/ojs/index.php/fti3/article/view/5298.