Doff, A., & Jones, C. (1997). Language in use: Classroom book a. Intermediate. Cambridge University Press.
Chicago Style (17th ed.) CitationDoff, Adrian, and Christopher Jones. Language in Use: Classroom Book a. Intermediate. Inglaterra: Cambridge University Press, 1997.
MLA (9th ed.) CitationDoff, Adrian, and Christopher Jones. Language in Use: Classroom Book a. Intermediate. Cambridge University Press, 1997.