Teenagers in the United States [electronic resource] : sexual activity, contraceptive use, and childbearing, 2006-2010 National Survey of Family Growth.
Publication Info.
Hyattsville, Maryland : U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics, [2011]
Washington, DC : For sale by the Superintendent of Documents, U.S. Government Printing Office