Richards, J. C. (1984). Error analysis: Perspectives on second language acquisition. Longman.
Citazione stile Chigago Style (17a edizione)Richards, Jack C. Error Analysis: Perspectives on Second Language Acquisition. London: Longman, 1984.
Citatione MLA (9a ed.)Richards, Jack C. Error Analysis: Perspectives on Second Language Acquisition. Longman, 1984.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.