APA (7th ed.) Zitazioa

Naylor, H., & Murphy, R. (2007). Essential Grammar in use suplementary exercises, with answers (2a. ed.). Cambridge University Press.

Chicago Style (17th ed.) Zitazioa

Naylor, Helen, eta Raymond Murphy. Essential Grammar in Use Suplementary Exercises, with Answers. 2a. ed. Cambridge University Press, 2007.

MLA (9th ed.) Zitazioa

Naylor, Helen, eta Raymond Murphy. Essential Grammar in Use Suplementary Exercises, with Answers. 2a. ed. Cambridge University Press, 2007.