Hartati, Devi, Bayti Jannah, Nur Ain Desta Sulasdi, Sri Putriani Sinaga, Sulistyaningsih, and Firdaus Hafidz. “The Effectiveness Between of Yoga and Birth Ball in Reducing Labor Pain: A Systematic Review”. BKM Public Health and Community Medicine 40, no. 04 (April 30, 2024): e9512. Accessed November 22, 2024. https://dev.journal.ugm.ac.id/v3/BKM/article/view/9512.