Statistics Canada. 1993. Adults with disabilities: Their employment and education characteristics. 1991 Health and Activity Limitation Survey. Ottawa: Statistics Canada Catalogue 82–554.
Stoddard S, Jans L, Ripple J, Kraus L. 1998. Chartbook on Work and Disability in the United States, 1998. An InfoUse Report. Washington, DC: U.S. National Institute on Disability and Rehabilitation Research.
Verbrugge L, Jette A. 1994. The disablement process. Soc Sci & Med. 38(1):1–14.
World Health Organization (WHO). 1947. Constitution of the World Health Organization. New York, NY: WHO.
WHO. 1980. The International Classification of Impairments, Disabilities, and Handicaps—A Manual Relating to the Consequences of Disease. Geneva: WHO.
WHO. 1997. ICIDH-2: International Classification of Impairments, Activities, and Participation. A Manual of Dimensions of Disablement and Functioning. Beta-1 Draft for Field Trials. Geneva: WHO.
Wunderlich GS, ed. 1999. Measuring Functional Capacity and Work Requirements. Washington, DC: National Academy Press.