Não informado. (1987). American Journal of Mental Retardation. American Association on Mental Retardation.
Chicago-referens (17:e uppl.)Não informado. American Journal of Mental Retardation. Washington: American Association on Mental Retardation, 1987.
MLA-referens (8:e uppl.)Não informado. American Journal of Mental Retardation. American Association on Mental Retardation, 1987.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.