APA Citation

Koenig, C. L., Oxenden, C., & Paul Seligson. (2013). American English file: Online practice. Oxford: Oxford University Press.

Trích dẫn kiểu Chicago

Koenig, Chistina Latham, Clive Oxenden, và Paul Seligson. American English File: Online Practice. Oxford: Oxford University Press, 2013.

MLA Citation

Koenig, Chistina Latham, Clive Oxenden, và Paul Seligson. American English File: Online Practice. Oxford: Oxford University Press, 2013.

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