APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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