APA (7th ed.) Citation
Oxenden, C., Latham-Koenig, C., Clandfield, L., & Seligson, P. (2008). American english file: Teacher's book 2. Oxford University Press.
Chicago Style (17th ed.) Citation
Oxenden, Clive, Christina Latham-Koenig, Lindsay Clandfield, and Paul Seligson. American English File: Teacher's Book 2. New York: Oxford University Press, 2008.
MLA (9th ed.) Citation
Oxenden, Clive, et al. American English File: Teacher's Book 2. Oxford University Press, 2008.
Warning: These citations may not always be 100% accurate.