Cita APA

David Crystal. (1997). English as a global language. Cambridge, UK: Cambridge Univ. Press.

Chicago Style Citation

David Crystal. English As a Global Language. Cambridge, UK: Cambridge Univ. Press, 1997.

Cita MLA

David Crystal. English As a Global Language. Cambridge, UK: Cambridge Univ. Press, 1997.

Atenció: Aquestes cites poden no estar 100% correctes.