APA (7th ed.) Zitazioa

Richards, J. C. (1984). Error analysis: Perspectives on second language acquisition. Longman.

Chicago Style (17th ed.) Zitazioa

Richards, Jack C. Error Analysis: Perspectives on Second Language Acquisition. London: Longman, 1984.

MLA (9th ed.) Zitazioa

Richards, Jack C. Error Analysis: Perspectives on Second Language Acquisition. Longman, 1984.