Oxenden, C., & Latham Koenig, C. (2001). English file Upper intermediate: Class Audio CDs. Oxford: Oxford University Press.
Chicago Style CitationOxenden, Clive, and Christina Latham Koenig. English File Upper Intermediate: Class Audio CDs. Oxford: Oxford University Press, 2001.
MLA CitationOxenden, Clive, and Christina Latham Koenig. English File Upper Intermediate: Class Audio CDs. Oxford: Oxford University Press, 2001.
Warning: These citations may not always be 100% accurate.