Marwah, S., N. Bansal, H. Gaikwad, and M. Sharma. “Giant Chorioangioma of Placenta: An Infrequent Placental Cause for Adverse Feto-Maternal Outcome”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 4, no. 3, Feb. 2017, pp. 893-7, doi:10.18203/2320-1770.ijrcog20150122.