Fatimah, S., D. Erwandi, and S. Prasetyo. “POSTPARTUM FAMILY PLANNING IN DKI JAKARTA: RUN CHART ANALYSIS”. Jurnal Biometrika Dan Kependudukan, vol. 11, no. 1, July 2022, pp. 89-97, doi:10.20473/jbk.v11i1.2022.89-97.