Mulyati, Heti, and Melsa Sagita Imaniar. “EFEKTIVITAS BIRTH BALL TERHADAP LAMA KALA I DAN INTENSITAS NYERI PERSALINAN: LITERATURE REVIEW ”. Jurnal BIMTAS: Jurnal Kebidanan Umtas 7, no. 2 (November 30, 2023): 99–105. Accessed August 3, 2024. https://journal.umtas.ac.id/index.php/bimtas/article/view/4515.