Nurjannah Ridwan, et al. “EFEKTIVITAS BIRTH BALL DALAM MANAJEMEN NYERI PERSALINAN: LITERATURE REVIEW”. Jurnal Kesehatan Masyarakat Indonesia (JKMI), vol. 2, no. 2, Dec. 2024, pp. 18-25, https://doi.org/10.62017/jkmi.v2i2.3232.