APA (7th ed.) Zitazioa
Naylor, H., & Murphy, R. (1996). Essential english grammar: Supplementary exercises; with answers. CUP.
Chicago Style (17th ed.) Zitazioa
Naylor, Helen, eta Raymond Murphy. Essential English Grammar: Supplementary Exercises; with Answers. Cambridge: CUP, 1996.
MLA (9th ed.) Zitazioa
Naylor, Helen, eta Raymond Murphy. Essential English Grammar: Supplementary Exercises; with Answers. CUP, 1996.
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