Cita APA

Gairns R. Ruth & Redman S. Stuart. (2003). Natural English. Upper-intermediate: Teacher's book. New York, Oxford University Press, 2003.

Citación estilo Chicago

Gairns R. Ruth and Redman S. Stuart. Natural English. Upper-intermediate: Teacher's Book. New York, Oxford University Press, 2003, 2003.

Cita MLA

Gairns R. Ruth and Redman S. Stuart. Natural English. Upper-intermediate: Teacher's Book. New York, Oxford University Press, 2003, 2003.