Efek Terapi Birth Ball pada Ibu Bersalin terhadap Intensitas Nyeri Persalinan Kala I Fase Aktif. JOTING [Internet]. 2022 Nov. 25 [cited 2025 Sep. 27];4(2):838-46. Available from: https://ipm2kpe.or.id/journal.ipm2kpe.or.id/index.php/JOTING/article/view/4703