Oxenden, C., & Latham-Koenig, C. (2009). American English file(4,Student book). Oxford University Press.
Chicago Style (17th ed.) CitationOxenden, Clive, and Christina Latham-Koenig. American English File(4,Student Book). Oxford University Press, 2009.
MLA (8th ed.) CitationOxenden, Clive, and Christina Latham-Koenig. American English File(4,Student Book). Oxford University Press, 2009.
Warning: These citations may not always be 100% accurate.