@inbook{Iwasawa2005,
author = {Iwasawa, M.},
title= {Cohabitation in Japan},
year = {2005},
editor = {Research, Council},
booktitle = {Family attitudes in an era of very low fertility: Report on the 1st Survey of Population, Family, and Generations},
address = {Tokyo},
publisher = {Mainichi Shinbunsha},
pages = {69−104},
}