APA (7th ed.) Citation

Gairns R. Ruth. (2003). Natural English. Upper-intermediate: Puzzle book. New York, Oxford University Press, 2003.

Chicago Style (17th ed.) Citation

Gairns R. Ruth. Natural English. Upper-intermediate: Puzzle Book. New York, Oxford University Press, 2003, 2003.

MLA (9th ed.) Citation

Gairns R. Ruth. Natural English. Upper-intermediate: Puzzle Book. New York, Oxford University Press, 2003, 2003.

Warning: These citations may not always be 100% accurate.