APA

Ventura S. J., Hamilton B. E. & Matthews T. J. (20141201). National and state patterns of teen births in the United States, 1940-2013. : National vital statistics reports : from the Centers for Disease Control and Prevention, National Center for Health Statistics, National Vital Statistics System.

Chicago

Ventura Stephanie J, Hamilton Brady E and Matthews T J. 20141201. National and state patterns of teen births in the United States, 1940-2013. : National vital statistics reports : from the Centers for Disease Control and Prevention, National Center for Health Statistics, National Vital Statistics System.

Harvard

Ventura S. J., Hamilton B. E. and Matthews T. J. (20141201). National and state patterns of teen births in the United States, 1940-2013. : National vital statistics reports : from the Centers for Disease Control and Prevention, National Center for Health Statistics, National Vital Statistics System.

MLA

Ventura Stephanie J, Hamilton Brady E and Matthews T J. National and state patterns of teen births in the United States, 1940-2013. : National vital statistics reports : from the Centers for Disease Control and Prevention, National Center for Health Statistics, National Vital Statistics System. 20141201.