@inbook{Ruggles2016,
author = {Ruggles, S.},
title= {Marriage, family systems, and economic opportunity in the United States since 1850},
year = {2016},
doi = {10.1007/978-3-319-21635-5_1},
editor = {McHale, S.M.},
editor = {King, V.},
editor = {Van Hook, J.},
editor = {Booth, A. },
booktitle = {Gender and couple relationships},
address = {Heidelberg},
publisher = {Springer},
pages = {3--41},
}