Cita APA (7a ed.)

Murphy, R. (1997). Essential grammar in use: Cambridge dictionaries. Cambridge University Press.

Cita Chicago Style (17a ed.)

Murphy, Raymond. Essential Grammar in Use: Cambridge Dictionaries. Cambridge: Cambridge University Press, 1997.

Cita MLA (8a ed.)

Murphy, Raymond. Essential Grammar in Use: Cambridge Dictionaries. Cambridge University Press, 1997.