Não informado. (1973). Mental Retardation and Developmental Disabilities. Brunner Mazel.
Lua i Stíl Chicago (17ú heag.)Não informado. Mental Retardation and Developmental Disabilities. New York: Brunner Mazel, 1973.
Lua MLA (8ú heag.)Não informado. Mental Retardation and Developmental Disabilities. Brunner Mazel, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.