I. Fadmiyanor, J. Rahmi, and M. Ayu, “PENGARUH PEMBERIAN METODE BIRTH BALL TERHADAP INTENSITAS NYERI PERSALINAN KALA 1 FASE AKTIF DI BPM SITI JULAEHA”, JIA, vol. 5, no. 2, pp. 102 - 109, May 2020.