U.S. Census Bureau. 2008. 2007 American Community Survey. S0201. Selected populationprofile in the United States. Population group: Hispanic or Latino (of any race),http://factfinder.census.gov/ (accessed November 20, 2008).
U.S. Government Accountability Office. 2008. Long-term fiscal outlook. Action is needed toavoid the possibility of a serious economic disruption in the future. Testimony by Director David M. Walker before the U.S. Senate Committee on the Budget. GAO-08-411T, http://www.gao.gov/new.items/d08411t.pdf (accessed August 7, 2008).