Sujacka Retno, Bustami, and Rozzi Kesuma Dinata. “Enhancing K-Means Clustering Model to Improve Rice Harvest Productivity Areas in Aceh Utara Using Purity”. Jurnal Nasional Pendidikan Teknik Informatika : JANAPATI, vol. 13, no. 2, July 2024, pp. 405-18, doi:10.23887/janapati.v13i2.78254.