Chourasia, S., and K. Yadav. “Analytical Study to Assess Fetal and Perinatal Outcome in Booked and Unbooked Obstetric Cases”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 6, no. 1, Dec. 2016, pp. 203-6, doi:10.18203/2320-1770.ijrcog20164658.