APA (7th ed.) Citation

Oxenden, C., Latham-Koening, C., & Seligson, P. (1997). New english file. Oxford University press.

Chicago Style (17th ed.) Citation

Oxenden, Clive, Christina Latham-Koening, and Paul Seligson. New English File. London: Oxford University press, 1997.

MLA (9th ed.) Citation

Oxenden, Clive, et al. New English File. Oxford University press, 1997.