Cita APA

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

Citación estilo Chicago

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

Cita MLA

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