APA引文

Koenig, C. L., Oxenden, C., & Seligson, P. (2013). American English file: Teacher's book. Oxford: Oxford University Press.

Trích dẫn kiểu Chicago

Koenig, Chistina Latham, Clive Oxenden, và Paul Seligson. American English File: Teacher's Book. Oxford: Oxford University Press, 2013.

MLA引文

Koenig, Chistina Latham, Clive Oxenden, và Paul Seligson. American English File: Teacher's Book. Oxford: Oxford University Press, 2013.