Rahim, Rosita, Mutiara Rachmawati Suseno, Ati Sulianty, and Baiq Yuni Fitri Hamidiyanti. “Pengaruh Birth Ball Terhadap Lama Persalinan Kala I Fase Aktif Pada Primigravida ”. Indonesian Health Issue 3, no. 2 (August 31, 2024): 89–96. Accessed April 8, 2025. https://inhis.pubmedia.id/index.php/inhis/article/view/74.