Nurmaisya E, Mulyati S. EVIDENCE BASED CASE REPORT (EBCR) : PENGGUNAAN BIRTH BALL EFEKTIF DALAM MENGURANGI NYERI PERSALINAN KALA I. JKS [Internet]. 2022Aug.31 [cited 2024May20];3(1):45 - 2. Available from: https://jurnal.polkesban.ac.id/index.php/jks/article/view/1197