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Lua i Stíl Chicago (17ú heag.)Farber, Bernard. Mental Retardation: Its Social Context and Social Consequences. Boston: Houghton Mifflin, 1968.
Lua MLA (9ú heag.)Farber, Bernard. Mental Retardation: Its Social Context and Social Consequences. Houghton Mifflin, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.