Cita APA (7a ed.)

Widdowson, H. G. (2007). Discourse analysis. Oxford University Press.

Cita Chicago Style (17a ed.)

Widdowson, H. G. Discourse Analysis. Oxford ; New York: Oxford University Press, 2007.

Cita MLA (8a ed.)

Widdowson, H. G. Discourse Analysis. Oxford University Press, 2007.