Susanti, Eni, Ossie Happinasari, Laela Rizqi Utami, and Indriyani . 2013. “PENGARUH ACTIVE BIRTH TERHADAP PROSES PERSALINAN KALA I FASE AKTIF”. Bidan Prada 4 (02). https://jurnal.stikesylpp.ac.id/index.php/JBP/article/view/81.