1. Administration on Aging 2011 Aging statistics http://www.aoa.gov/AoARoot/Aging_Statistics/index.aspx
2. Administration on Aging 2012 A profile of older Americans: 2012 http://www.aoa.gov/Aging_Statistics/Profile/2012/docs/2012profile.pdf
3. American Association of Retired Persons 2005 Beyond 50.05: A report to the nation on liable communities: Creating environments for successful aging http://assets.aarp.org/rgcenter/il/beyond_50_communities.pdf
4. Bayer , A. Harper , L. 2000 Fixing to stay: A national survey on housing and home modification issues http://research.aarp.org/il/home_mod.pdf
5. Center for Housing Policy 2012 Housing an aging population: Are we prepared? www.nhc.org/media/files/AgingReport2012.pdf