Citazione Stile APA (7a Edizione)

Crystal, D. (2003). English as a global language (2nd ed.). Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

Crystal, David. English as a Global Language. 2nd ed. New York ; New Delhi: Cambridge University Press, 2003.

Citatione MLA (8a ed.)

Crystal, David. English as a Global Language. 2nd ed. Cambridge University Press, 2003.