APA (7th ed.) Zitazioa

Hashemi, L., & Thomas, B. (2008). Grammar for first certificate with answers (2a. ed.). Cambridge University Press.

Chicago Style (17th ed.) Zitazioa

Hashemi, Louise, eta Barbara Thomas. Grammar for First Certificate with Answers. 2a. ed. Cambridge: Cambridge University Press, 2008.

MLA (9th ed.) Zitazioa

Hashemi, Louise, eta Barbara Thomas. Grammar for First Certificate with Answers. 2a. ed. Cambridge University Press, 2008.