Richards, J. C. (1984). Error analysis: Perspectives on second language acquisition. Longman.
Lua i Stíl Chicago (17ú heag.)Richards, Jack C. Error Analysis: Perspectives on Second Language Acquisition. London: Longman, 1984.
Lua MLA (9ú heag.)Richards, Jack C. Error Analysis: Perspectives on Second Language Acquisition. Longman, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.