Oxenden, C. (2009). American English file: Student book 4. Oxford: Oxford University Press.
Chicago Style CitationOxenden, Clive. American English File: Student Book 4. Oxford: Oxford University Press, 2009.
Cita MLAOxenden, Clive. American English File: Student Book 4. Oxford: Oxford University Press, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.