Citazione Stile APA (7a Edizione)

Richards, J. C. (1974). Error analysis: Perspectives on second language acquisition. Longman Group Limited.

Citazione stile Chigago Style (17a edizione)

Richards, Jack C. Error Analysis: Perspectives on Second Language Acquisition. Londres: Longman Group Limited, 1974.

Citatione MLA (9a ed.)

Richards, Jack C. Error Analysis: Perspectives on Second Language Acquisition. Longman Group Limited, 1974.