APA
Widdowson H. G., . (2007). Discourse analysis. Oxford: Oxford University Press.
Chicago
Widdowson H G, . 2007. Discourse analysis. Oxford: Oxford University Press.
Harvard
Widdowson H. G., . (2007). Discourse analysis. Oxford: Oxford University Press.
MLA
Widdowson H G, . Discourse analysis. Oxford: Oxford University Press. 2007.