MURPHY, R. (1987). English grammar in use: A self-study reference and practice book for intermediate students (with answers). Canbridge University Press.
Cita Chicago (17th ed.)MURPHY, Raymond. English Grammar in Use: A Self-study Reference and Practice Book for Intermediate Students (with Answers). New York: Canbridge University Press, 1987.
Cita MLA (9th ed.)MURPHY, Raymond. English Grammar in Use: A Self-study Reference and Practice Book for Intermediate Students (with Answers). Canbridge University Press, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.