Arafah, S., Lotisna, D. and Tiro, E. (2016) “Perineal Massage during Second Stage of Labor to the Perineal Laceration Degree in Primigravida”, Indonesian Journal of Obstetrics and Gynecology, 4(4), pp. 218–221. doi: 10.32771/inajog.v4i4.440.