Lailiyah, Siti, and HafiyusholehMoh. “PERBANDINGAN ANTARA METODE K-MEANS CLUSTERING DENGAN GATH-GEVA CLUSTERING”. Jurnal Matematika MANTIK 1, no. 2 (May 30, 2016): 26-37. Accessed October 23, 2020. http://jurnalsaintek.uinsby.ac.id/index.php/mantik/article/view/59.