@article{Hummer1995,
author = {Hummer, R.A. and Schmertmann, C.P. and Eberstein, I.W. and Kelly, S.},
title= {Retrospective Reports of Pregnancy Wantedness and Birth Outcomes in the United States},
year = {1995},
journal = {Social Science Quarterly},
volume = {76},
pages = {402--418},
}