APA引文

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

Trích dẫn kiểu Chicago

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

MLA引文

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