Cita APA

Crystal, D. (1997). English as a global language. Cambridge, England: Cambridge University Press.

Chicago Style Citation

Crystal, David. English As a Global Language. Cambridge, England: Cambridge University Press, 1997.

Cita MLA

Crystal, David. English As a Global Language. Cambridge, England: Cambridge University Press, 1997.

Atenció: Aquestes cites poden no estar 100% correctes.