@techreport{Ventura2000,
author = {Ventura, S.J. and Bachrach, C.A.},
title= {Nonmarital childbearing in the United States, 1940-99},
year = {2000},
URL = {http://www.cdc.gov/nchs/data/nvsr/nvsr48/nvs48_16.pdf},
publisher = {Center for Disease Control and Prevention},
institution = {National Vital Statistics Reports},
number = {Vol. 48 (16)},
}