Vital Statistics of the United States [various years]. United States Department of Health and Human Services, National Center for Health Statistics.
Cita Chicago Style (17a ed.)Vital Statistics of the United States [various Years]. [Erscheinungsort nicht ermittelbar]: United States Department of Health and Human Services, National Center for Health Statistics.
Cita MLA (9a ed.)Vital Statistics of the United States [various Years]. United States Department of Health and Human Services, National Center for Health Statistics.
Precaución: Estas citas no son 100% exactas.