@article{Sweeney2010,
author = {Sweeney, M.M.},
title= {The reproductive context of cohabitation in the United States: Recent change and variation in contraceptive use},
year = {2010},
doi = {10.1111/j.1741-3737.2010.00756.x},
journal = {Journal of Marriage and Family },
volume = {72},
pages = {1155−1170},
}