When are babies born: morning, noon, or night? :
birth certificate data for 2013 /
T.J. Mathews and Sally C. Curtin.

APA Citation

Mathews, T. J.., Curtin, S. C.., National Center for Health Statistics (U.S.). (2015). When are babies born: morning, noon, or night?: birth certificate data for 2013. Hyattsville, MD: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics.

MLA Citation

Mathews, T. J., Sally C. Curtin, and National Center for Health Statistics (U.S.). When Are Babies Born: Morning, Noon, Or Night?: Birth Certificate Data for 2013. Hyattsville, MD: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics, 2015.