APA (7th ed.) Zitazioa

De Schiffrin, R. (1971). English - My second language. Longman.

Chicago Style (17th ed.) Zitazioa

De Schiffrin, R.S. English - My Second Language. London: Longman, 1971.

MLA (9th ed.) Zitazioa

De Schiffrin, R.S. English - My Second Language. Longman, 1971.