APA (7th ed.) Citation

Cook, G., & Widdowson, H. G. (2003). Applied linguistics. Oxford University Press.

Chicago Style (17th ed.) Citation

Cook, Guy, and H. G. Widdowson. Applied Linguistics. Oxford: Oxford University Press, 2003.

MLA (8th ed.) Citation

Cook, Guy, and H. G. Widdowson. Applied Linguistics. Oxford University Press, 2003.