Fonseca, Michelle, Prasad Yeshwant Deshmukh, and Deepali Kharat. “Progesterone Only Pills: An Effective Contraceptive Option for Lactating Women”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology 6, no. 10 (September 23, 2017): 4399–4401. Accessed November 25, 2025. https://www.ijrcog.org/index.php/ijrcog/article/view/3379.