Não informado. (1966). International Review of Research in Mental Retardation. Academic Press.
Chicago-referens (17:e uppl.)Não informado. International Review of Research in Mental Retardation. New York: Academic Press, 1966.
MLA-referens (8:e uppl.)Não informado. International Review of Research in Mental Retardation. Academic Press, 1966.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.