Edgerton, R. B. (1979). Mental retardation. Harvard University Press.
Chicago Style aipamenaEdgerton, Robert B. Mental Retardation. Cambridge, Mass.: Harvard University Press, 1979.
MLA aipamenaEdgerton, Robert B. Mental Retardation. Harvard University Press, 1979.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.