Shipman, M. K., Boniface, D. R., Tefft, M. E., McCloghry, F. (July 1997). "Antenatal perineal massage and subsequent perineal outcomes: a randomised controlled trial". British Journal of Obstetrics and Gynaecology104 (7): 787–91. doi:10.1111/j.1471-0528.1997.tb12021.x. பப்மெட்:9236642.
Shipman, M. K., Boniface, D. R., Tefft, M. E., McCloghry, F. (July 1997). "Antenatal perineal massage and subsequent perineal outcomes: a randomised controlled trial". British Journal of Obstetrics and Gynaecology104 (7): 787–91. doi:10.1111/j.1471-0528.1997.tb12021.x. பப்மெட்:9236642.