Farida, Yuniar, et al. “Clustering Couples of Childbearing Age to Get Family Planning Counseling Using K-Means Method”. MATRIK : Jurnal Manajemen, Teknik Informatika Dan Rekayasa Komputer, vol. 22, no. 1, Nov. 2022, pp. 189-00, https://doi.org/10.30812/matrik.v22i1.1888.