Vital Statistics of the United States [various years]. United States Department of Health and Human Services, National Center for Health Statistics.
Chicago-Zitierstil (17. Ausg.)Vital Statistics of the United States [various Years]. [Erscheinungsort nicht ermittelbar]: United States Department of Health and Human Services, National Center for Health Statistics.
MLA-Zitierstil (9. Ausg.)Vital Statistics of the United States [various Years]. United States Department of Health and Human Services, National Center for Health Statistics.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.