Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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