1. Americans Disability Act. Introduction to the ADA. https://www.ada.gov/ada_intro.html. Accessed August 7, 2016.
2. ADA National Network. Understanding Disability Statistics. https://adata.org/factsheet/understanding-disability-statistics.html. Accessed December 10, 2016.
3. Nearly 1 in 5 People Have a Disability in the U.S., Census Bureau Reports Report Released to Coincide with 22nd Anniversary of the ADA. July 2012. https://www.census.gov/newsroom/releases/archives/miscellaneous/cb12-134.html. Accessed August 7, 2016.
4. United States Census Bureau. Disability: American community survey (ACS). https://www.census.gov/people/disability/methodology/acs.html. Updated June 9, 2014. Accessed August 7, 2016.
5. Centers for Disease Control and Prevention. Disability overview: Impairments, activity limitations, and participation restrictions. http://www.cdc.gov/ncbddd/disabilityandhealth/disability.html. Updated July 22, 2015. Accessed August 7, 2016.