ULFAH, Maria; ROSMARIA, Rosmaria. Pengaruh Terapi Birth Ball pada Ibu In-Partu terhadap Intensitas Nyeri Persalinan Kala I Fase Aktif di PMB Nuriman Rafida Jambi. NURSING UPDATE : Jurnal Ilmiah Ilmu Keperawatan P-ISSN : 2085-5931 e-ISSN : 2623-2871, [S. l.], v. 12, n. 4, p. 10–20, 2021. DOI: 10.36089/nu.v12i4.491. Disponível em: https://www.ojsnhm.com/index.php/NU/article/view/491. Acesso em: 22 apr. 2026.