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