Singh, A., V. Bansal, and N. Singh. “Prenatal Diagnosis of Fetal Cholelithiasis: A Rare Case”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 7, no. 11, Oct. 2018, pp. 4786-8, doi:10.18203/2320-1770.ijrcog20184549.