@article{Willetts2006,
author = {Willetts, Marion C.},
title= {Union Quality Comparisons Between Long-Term Heterosexual Cohabitation and Legal Marriage},
year = {2006},
doi = {10.1177/0192513x05279986},
journal = {Journal of Family Issues},
volume = {27},
number = {1},
pages = {110--127},
}