Cita APA (7a ed.)

Naylor, H., & Murphy, R. (2007). Essential grammar in use supplementary exercises: With answers (2nd ed.). Cambridge University Press.

Cita Chicago Style (17a ed.)

Naylor, Helen, y Raymond Murphy. Essential Grammar in Use Supplementary Exercises: With Answers. 2nd ed. Cambridge [etc.]: Cambridge University Press, 2007.

Cita MLA (9a ed.)

Naylor, Helen, y Raymond Murphy. Essential Grammar in Use Supplementary Exercises: With Answers. 2nd ed. Cambridge University Press, 2007.