APA (7th ed.) Zitazioa
Quirk, R., & Greenbaum, S. (2016). A university grammar of english (4th ed.). Longman , Pearson Education.
Chicago Style (17th ed.) Zitazioa
Quirk, Randolph, eta Sidney Greenbaum. A University Grammar of English. 4th ed. New Delhi: Longman , Pearson Education, 2016.
MLA (9th ed.) Zitazioa
Quirk, Randolph, eta Sidney Greenbaum. A University Grammar of English. 4th ed. Longman , Pearson Education, 2016.
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