APA ציטוט

Koenig, C. L., Oxenden, C., & Boyle, M. (2013). American English file: Workbook. Oxford: Oxford University Press.

Trích dẫn kiểu Chicago

Koenig, Chistina Latham, Clive Oxenden, và Mike Boyle. American English File: Workbook. Oxford: Oxford University Press, 2013.

ציטוט MLA

Koenig, Chistina Latham, Clive Oxenden, và Mike Boyle. American English File: Workbook. Oxford: Oxford University Press, 2013.