Vishwanath Dange, and V. Malathi. “A Comparative Study of Efficacy and Safety of Oral Contraceptive Pills Versus Intrauterine Devices in Preventing Unintended Pregnancy”. International Journal of Pharmacy Research & Technology (IJPRT), vol. 15, no. 1, Apr. 2025, pp. 368-73, https://ijprt.org/index.php/pub/article/view/387.