Cita APA (7a ed.)

Oxenden, C., Latham-Koenig, C., & Hamilton, G. (1999). English file: Intermediate. Oxford University Press.

Cita Chicago Style (17a ed.)

Oxenden, Clive, Christina Latham-Koenig, y Gill Hamilton. English File: Intermediate. Oxford: Oxford University Press, 1999.

Cita MLA (9a ed.)

Oxenden, Clive, et al. English File: Intermediate. Oxford University Press, 1999.