@inbook{England2011,
author = {England, P. and McClintock, E.A. and Shafer, E.F. },
title= {Birth control use and early, unintended births},
year = {2011},
editor = {Carlson, M.J.},
editor = {England, P. },
booktitle = {Social class and changing families in an unequal America},
address = {Stanford, CA},
publisher = {Stanford University Press},
pages = {21−49},
}