1. Bartlett’s familiar quotations,1919
2. International Brief,2003
3. US Census Bureau, US Department of Commerce. Available at: http://www.census.gov/index.html. Accessed January 30, 2003.
4. US Census Bureau. Americans with disabilities; 1997. tbl 1. Available at: http://www.census.gov/hhes/www/disable/sipp/disable97.html. Accessed January 30, 2003.
5. US Department of Justice. Americans with Disabilities Act. Available at: http://www.justice.gov/crt/ada/adahom1.htm. Accessed January 30, 2003.