Citrawati, Ni Luh Putu, et al. “The Effect of Birthing Ball on the Active Phase I of Labor Pain Scale for Mothers in the Work Area of the UPTD Public Health Center I of East Denpasar District”. Jurnal Genta Kebidanan, vol. 13, no. 2, June 2024, pp. 12-19, doi:10.36049/jgk.v13i2.237.