Yustina Retno Wahyu Utami, Rizal Yepriyanto, Kustanto,. “SISTEM DIAGNOSA KESUBURAN SPERMA DENGAN METODE K-NEAREST NEIGHBOR (K-NN)”. Jurnal Ilmiah SINUS, vol. 13, no. 2, July 2015, doi:10.30646/sinus.v13i2.216.