APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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