HUBUNGAN WATER BIRTH DAN PERSALINAN KONVENSIONAL DENGAN LAMA KALA II PRIMIGRAVIDA DI RS PMC PEKANBARU. JPK : Jurnal Proteksi Kesehatan, [S. l.], v. 5, n. 1, 2018. DOI: 10.36929/jpk.v5i1.48. Disponível em: https://jurnal.pkr.ac.id/JPK/article/view/48. Acesso em: 18 jan. 2026.