@techreport{Ventura2000,
author = {Ventura, S.J. and Bachrach, C.A.},
title= {Nonmarital Childbearing in the United States, 1940-1999},
year = {2000},
publisher = {National Center for Health Statistics},
address = {Hyattsville, MD},
institution = {National Vital Statistics Reports Vol. 48},
number = {No. 16},
}