1. Administration on Aging. (2013). Profile of older Americans. Retrieved from http://www.aoa.acl.gov/Aging_Statistics/Profile/index.aspx
2. Center on Budget and Policy Priorities. (2014). Chart book: TANF at 18. Retrieved from http://www.cbpp.org/cms/?fa=view&id=3566
3. Duggan M. Kearney M. S. , & Rennane S. L . (2014). The Supplemental Security Income Program. NBER Chapters. Retrieved from http://web.stanford.edu/~mgduggan/Research/MD_Kearney_2015.pdf
4. Market friendly or family friendly;Harrington Meyer,2007