Koenig, C. L., & Oxenden, C. (2013). American English file: Teacher's book. Oxford: Oxford University Press.
Chicago Style CitationKoenig, Chistina Latham, and Clive Oxenden. American English File: Teacher's Book. Oxford: Oxford University Press, 2013.
MLA CitationKoenig, Chistina Latham, and Clive Oxenden. American English File: Teacher's Book. Oxford: Oxford University Press, 2013.
Warning: These citations may not always be 100% accurate.