APA-referens (7:e uppl.)

Edgerton, R. B. (1979). Mental retardation. Harvard University Press.

Chicago-referens (17:e uppl.)

Edgerton, Robert B. Mental Retardation. Cambridge, Mass.: Harvard University Press, 1979.

MLA-referens (8:e uppl.)

Edgerton, Robert B. Mental Retardation. Harvard University Press, 1979.