Sari, N., Soejoenoes, A., Wahyuni, S., Setiani, O., & Anwar, C. (2017). THE EFFECTIVENESS OF COMBINATION OF OXYTOCIN AND ENDORPHIN MASSAGE ON UTERINE INVOLUTION IN PRIMIPAROUS MOTHERS. Belitung Nursing Journal, 3(5), 569-576. https://doi.org/10.33546/bnj.193