APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

CRYSTAL, David. English as a Global Language.-- Ed.2. Cambridge: Cambridge University Press, 2003.

MLA (9e ed.) Bronvermelding

CRYSTAL, David. English as a Global Language.-- Ed.2. Cambridge University Press, 2003.