Shah, S. H., S. T. Khattak, N. Zahir, N. Fayyaz, and S. Ali. “Comparison of Letrozole and Clomiphene Citrate Success Rate in Ovulation Induction”. Journal of Saidu Medical College, vol. 16, no. 1, Feb. 2026, pp. 189–196, doi:10.52206/jsmc.2026.16.1.1349.