Citazione Stile APA (7a Edizione)

Widdowson, H. G. (2003). Defining issues in english language teaching (1a. ed.). Oxford University.

Citazione stile Chigago Style (17a edizione)

Widdowson, H. G. Defining Issues in English Language Teaching. 1a. ed. Oxford: Oxford University, 2003.

Citatione MLA (9a ed.)

Widdowson, H. G. Defining Issues in English Language Teaching. 1a. ed. Oxford University, 2003.