Cita APA (7th ed.)

Murphy R. Raymond. (2007). Essential Grammar in Use. A self-study Reference and Practice Book for elementary Students of English with answers (3rd ed.). Cambridge, Cambridge University Press, 2007.

Cita Chicago (17th ed.)

Murphy R. Raymond. Essential Grammar in Use. A Self-study Reference and Practice Book for Elementary Students of English with Answers. 3rd ed. Cambridge, Cambridge University Press, 2007, 2007.

Cita MLA (9th ed.)

Murphy R. Raymond. Essential Grammar in Use. A Self-study Reference and Practice Book for Elementary Students of English with Answers. 3rd ed. Cambridge, Cambridge University Press, 2007, 2007.