Hangarga, U. S., R. D., and K. Harshitha. “Comparative Study of Labetalol and Nifedipine in Management of Hypertensive Disorders in Pregnancy”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 6, no. 1, Dec. 2016, pp. 194-7, doi:10.18203/2320-1770.ijrcog20164656.