حوالہ جات

[1] “Withdrawal: Only the Essentials.” Family Planning: A Global Handbook for Providers, 2022, fphandbook.org/chapter-19-withdrawal-only-essentials . Accessed August 2023.

[2] “Withdrawal (Pull Out Method).” Planned Parenthood, 2020, www.plannedparenthood.org/learn/birth-control/withdrawal-pull-out-method . Accessed August 2023.

[3] “Chapter 4: Natural Family Planning.” Journal of Obstetrics and Gynecology Canada, 2015, www.jogc.com/article/S1701-2163(16)39375-6/pdf . Accessed August 2023.

[4] “How Effective?” Family Planning: A Global Handbook for Providers, 2022, fphandbook.org/how-effective-1 . Accessed August 2023.

[5] “Contraception Methods.” The Society of Obstetricians and Gynecologists of Canada, 2016, www.sexandu.ca/wp-content/uploads/2016/09/Contraception_Methods_Booklet.pdf . Accessed August 2023.