APA (7th ed.) Citation

Oxenden, C., Latham-Koening, C., & Sligson, P. (2008). American english file: Multipack 2a. Oxford University Press.

Chicago Style (17th ed.) Citation

Oxenden, Clive, Christin Latham-Koening, and Paul67509 Sligson. American English File: Multipack 2a. : Oxford University Press, 2008.

MLA (9th ed.) Citation

Oxenden, Clive, et al. American English File: Multipack 2a. Oxford University Press, 2008.