@inbook{Miwa2010,
author = {Miwa, S.},
title= {Active singles in contemporary Japan},
year = {2010},
editor = {Satō, H.},
editor = {Nagai, A.},
editor = {Miwa, S.},
booktitle = {The barrier to marriage},
address = {Tokyo},
publisher = {Keisō Shobō},
}