Murphy R. Raymond. (1999). English Grammar in Use. A self-Study reference and practice book for intermediate students with answers (2-nd ed.). Cambridge, Cambridge University Press, 1999.
Cita Chicago (17th ed.)Murphy R. Raymond. English Grammar in Use. A Self-Study Reference and Practice Book for Intermediate Students with Answers. 2-nd ed. Cambridge, Cambridge University Press, 1999, 1999.
Cita MLA (9th ed.)Murphy R. Raymond. English Grammar in Use. A Self-Study Reference and Practice Book for Intermediate Students with Answers. 2-nd ed. Cambridge, Cambridge University Press, 1999, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.