Oxenden C. Clive & Latham-Koenig C. Christina. (2008). New English File. Upper-Intermediate: Teacher's Book. New York, Oxford University Press, 2008.
Cita Chicago Style (17a ed.)Oxenden C. Clive y Latham-Koenig C. Christina. New English File. Upper-Intermediate: Teacher's Book. New York, Oxford University Press, 2008, 2008.
Cita MLA (9a ed.)Oxenden C. Clive y Latham-Koenig C. Christina. New English File. Upper-Intermediate: Teacher's Book. New York, Oxford University Press, 2008, 2008.
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