PENGARUH PEMBERIAN METODE BIRTH BALL TERHADAP INTENSITAS NYERI PERSALINAN KALA 1 FASE AKTIF DI BPM SITI JULAEHA. JURNAL IBU DAN ANAK, [S. l.], v. 13, n. 2, 2020. Disponível em: https://jurnal.polkesri.ac.id/index.php/JIA/article/view/214. Acesso em: 10 jan. 2026.