Não informado. (1966). Education and Training of the Mentally Retarded. Council for Exceptional Children, Division on Mental Retardation.
Lua i Stíl Chicago (17ú heag.)Não informado. Education and Training of the Mentally Retarded. Reston, Va: Council for Exceptional Children, Division on Mental Retardation, 1966.
Lua MLA (8ú heag.)Não informado. Education and Training of the Mentally Retarded. Council for Exceptional Children, Division on Mental Retardation, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.