Lusiana Sinaga, F. ., E. . Samuel Hutasoit, and E. . Anto Pakpahan. “HUBUNGAN KADAR HEMOGLOBIN, PARITAS DAN USIA KEHAMILAN DENGAN KEJADIAN KETUBAN PECAH DINI”. Jurnal Kedokteran Methodist, vol. 14, no. 2, Dec. 2021, pp. 81-88, https://ejurnal.methodist.ac.id/index.php/jkm/article/view/1349.