Cita APA (7a ed.)

Latham-Koenig,Christina, Oxenden,Clive, & Hudson,Jane. (2014). English File: Upper-intermediate Workbook without key. Oxford University Press.

Cita Chicago Style (17a ed.)

Latham-Koenig,Christina, Oxenden,Clive, y Hudson,Jane. English File: Upper-intermediate Workbook Without Key. Oxford University Press, 2014.

Cita MLA (8a ed.)

Latham-Koenig,Christina, et al. English File: Upper-intermediate Workbook Without Key. Oxford University Press, 2014.