@inbook{Bengtson1990,
author = {Bengtson, V.L. and Rosenthal, C.J. and Burton, L.M.},
title= {Families and ageing: Diversity and heterogeneity},
year = {1990},
editor = {Binstock, R.H., and George, L.K. },
booktitle = {Handbook of aging and the social sciences},
address = {New York},
publisher = {Academic Press},
pages = {263--287},
}