Trussell, James (May 2011). “Contraceptive failure in the United States”. Contraception. 83 (5): 397-404. doi:10.1016/j.contraception.2011.01.021. PMC 3638209. PMID 21477680.
Trussell, James (November 1, 2011). “Contraceptive efficacy”. In Hatcher, Robert A.; Trussell, James; Nelson, Anita L.; Cates, Willard Jr.; Kowal, Deborah; Policar, Michael S. Contraceptive technology (20th revised ed.). New York: Ardent Media. pp. 779–863. ISBN 978-1-59708-004-0. ISSN 0091-9721. OCLC 781956734.
Jump up ^ Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention (CDC) (June 21, 2013). “U.S. Selected practice recommendations for contraceptive use, 2013: adapted from the World Health Organization Selected practice recommendations for contraceptive use, 2nd edition”. MMWR Recommendations and Reports. 62 (5): 1–60. PMID 23784109. Archived from the original on July 10, 2013.
男女之间情欲的不对等是政治性的,这寓示着在其他方面也没有平等可言。《性健康研究期刊》(Journal of Sex Health Research)曾刊登一项研究,在性别不平等较为严重的拉美地区,许多女性无法坦然提出要求伴侣戴套的要求,这也使得拉美的意外怀孕和艾滋病传播状况都很严峻。安全套本来是人类开始掌握避孕主动权的重大发明,但男性和女性对这项权力的掌握是不平等的。