1. Centers for Disease Control. DATA 2010 Focus Area: 09 Family Planning Objective 09-01;[17 March 2010].
2. Disparities in rates of unintended pregnancy in the United States;Finer, L.B.; Hensaw, S.K.;Perspect Sex Reprod Health,1994
3. Health and Human Services. Healthy People 2010: Understanding and Improving Health;[1 June 2010].;Maternal, Infant, and Child Health, Volume II, Section,2000
4. Determinants of unintended childbearing among ever-married women in the United States: 1973–1988. Fam Plann Perspect;Williams, L.B.,1991
5. Institute of Medicine. Committee on Unintended Pregnancy. The Best Intentions: Unintended Pregnancy and the Well-Being of Children and Families;Brown, S.S.; Eisenberg, L.,1995