Citazione Stile APA (7a Edizione)

Widdowson, H. G. (1984). Learning purpose and language use. Oxford University Press.

Citazione stile Chigago Style (17a edizione)

Widdowson, H. G. Learning Purpose and Language Use. Oxford: Oxford University Press, 1984.

Citatione MLA (9a ed.)

Widdowson, H. G. Learning Purpose and Language Use. Oxford University Press, 1984.