O'Loughlin, Michael (1 December 2019). "Surviving the AIDS crisis as a gay Catholic". America (Podcast). Plague: Untold Stories of AIDS & the Catholic Church. Retrieved 10 January 2019.
Underhill, Kristen; Operario, Don; Montgomery, Paul (17 October 2007). "Abstinence-only programs for HIV infection prevention in high-income countries". Cochrane Database of Systematic Reviews (4): CD005421. doi:10.1002/14651858.CD005421.pub2. PMID17943855.
World Health Organization Department of Reproductive Health and Research (WHO/RHR) & Johns Hopkins Bloomberg School of Public Health/Center for Communication Programs (CCP), INFO Project (2007). Family Planning: A Global Handbook for Providers. INFO Project at the Johns Hopkins Bloomberg School of Public Health. p. 200. Archived from the original on 27 August 2009.
Underhill, Kristen; Operario, Don; Montgomery, Paul (17 October 2007). "Abstinence-only programs for HIV infection prevention in high-income countries". Cochrane Database of Systematic Reviews (4): CD005421. doi:10.1002/14651858.CD005421.pub2. PMID17943855.
World Health Organization Department of Reproductive Health and Research (WHO/RHR) & Johns Hopkins Bloomberg School of Public Health/Center for Communication Programs (CCP), INFO Project (2007). Family Planning: A Global Handbook for Providers. INFO Project at the Johns Hopkins Bloomberg School of Public Health. p. 200. Archived from the original on 27 August 2009.