APA (7th ed.) Citation
Oxenden, C., & Latham-Koenig, C. (2008). American english file: Teacher's book 1. Oxford University Press.
Chicago Style (17th ed.) Citation
Oxenden, Clive, and Christina Latham-Koenig. American English File: Teacher's Book 1. New York: Oxford University Press, 2008.
MLA (9th ed.) Citation
Oxenden, Clive, and Christina Latham-Koenig. American English File: Teacher's Book 1. Oxford University Press, 2008.
Warning: These citations may not always be 100% accurate.