Huma Shahid, Anila Kamal, and Sana Younas. “Knowledge and Attitudes Toward Perceived Causes of Infertility and Adoption of Child Among Infertile Couples: A Cross-Sectional Descriptive Study”. Pakistan Journal of Medical Research, vol. 59, no. 3, Nov. 2020, pp. 106-10, https://www.pjmr.org.pk/index.php/pjmr/article/view/138.