M. Bhat, D., P. R. Butale, D. T. Kumbhalkar, and W. K. Raut. “Fetus Acardius Amorphous: A Rare Case Report”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 6, no. 10, Sept. 2017, pp. 4686-9, doi:10.18203/2320-1770.ijrcog20174178.