APA (7th ed.) Zitazioa

Biber, D. (2002). Longman student grammar of spoken and written English. Longman.

Chicago Style (17th ed.) Zitazioa

Biber, Douglas. Longman Student Grammar of Spoken and Written English. Harlow: Longman, 2002.

MLA (9th ed.) Zitazioa

Biber, Douglas. Longman Student Grammar of Spoken and Written English. Longman, 2002.

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