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