APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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