Paninsari, Debora. “TERAPI BIRTH BALL UNTUK MENURUNKAN INTENSITAS NYERI PERSALINAN”. Jurnal Maternitas Kebidanan 6, no. 1 (April 6, 2021): 94–98. Accessed April 3, 2026. http://139.162.50.187/index.php/jumkep/article/view/1640.