APA (7th ed.) Citation

Murphy, R., & Pallini, L. (1997). Essential grammar in use (2a. ed.). Cambridge University.

Chicago Style (17th ed.) Citation

Murphy, Raymond, and Lelio Pallini. Essential Grammar in Use. 2a. ed. Nueva York: Cambridge University, 1997.

MLA (9th ed.) Citation

Murphy, Raymond, and Lelio Pallini. Essential Grammar in Use. 2a. ed. Cambridge University, 1997.