@article{Beck1989,
author = {Beck, S.H.  and Beck, R.W. },
title= {The Incidence of Extended Households Among Middle-Aged Black and White Women: Estimates from a 15-Year Panel Study},
year = {1989},
doi = {10.1177/019251389010002001},
journal = {Journal of Family Issues},
volume = {10},
number = {2},
pages = {147--168},
}