Murphy, R. (2004). English grammar in use: A selft-study reference an practice book for intermediate students of english, with answers (3a. ed.). Cambridge University.
Cita Chicago (17th ed.)Murphy, Raymond. English Grammar in Use: A Selft-study Reference an Practice Book for Intermediate Students of English, with Answers. 3a. ed. Cambridge: Cambridge University, 2004.
Cita MLA (9th ed.)Murphy, Raymond. English Grammar in Use: A Selft-study Reference an Practice Book for Intermediate Students of English, with Answers. 3a. ed. Cambridge University, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.