Maji, A., M. V. Ramani, and K. Kiran. “Clomiphene Versus Letrozole: A Better Agent for Ovulation Induction”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 9, no. 10, Sept. 2020, pp. 4145-9, doi:10.18203/2320-1770.ijrcog20204303.