Cita APA (7a ed.)

Widdowson, H. (1985). Teaching Language as Communication (6th impression.). Oxford University Press.

Cita Chicago Style (17a ed.)

Widdowson, H.G. Teaching Language as Communication. 6th impression. Oxford: Oxford University Press, 1985.

Cita MLA (9a ed.)

Widdowson, H.G. Teaching Language as Communication. 6th impression. Oxford University Press, 1985.