Não informado. (1987). American Journal of Mental Retardation. American Association on Mental Retardation.
Lua i Stíl Chicago (17ú heag.)Não informado. American Journal of Mental Retardation. Washington: American Association on Mental Retardation, 1987.
Lua MLA (8ú heag.)Não informado. American Journal of Mental Retardation. American Association on Mental Retardation, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.