Cita APA

Oxenden, C., Latham-Koenig, C., & Hudson, J. (2001). English file upper-intermediate student's book. Oxford: Oxford University.

Citación estilo Chicago

Oxenden, Clive, Christina Latham-Koenig, and Jane Hudson. English File Upper-intermediate Student's Book. Oxford: Oxford University, 2001.

Cita MLA

Oxenden, Clive, Christina Latham-Koenig, and Jane Hudson. English File Upper-intermediate Student's Book. Oxford: Oxford University, 2001.