@techreport{Manning2013,
author = {Manning, W.D.},
title= {Trends in cohabitation: Over twenty years of change, 1987–2010},
year = {2013},
URL = {http://ncfmr.bgsu.edu/pdf/family_profiles/file130944.pdf},
publisher = {National Center for Family and Marriage Research},
institution = {FP-13-12},
}