Sengodan, S. S., and M. Dhanapal. “Abruptio Placenta: A Retrospective Study on Maternal and Perinatal Outcome”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 6, no. 10, Sept. 2017, pp. 4389-92, doi:10.18203/2320-1770.ijrcog20174410.