Cita APA (7th ed.)
Crystal, D. (2003). English as a global language (Second edition.). Cambridge University Press.
Cita Chicago (17th ed.)
Crystal, David. English as a Global Language. Second edition. Cambridge, England ; New York: Cambridge University Press, 2003.
Cita MLA (9th ed.)
Crystal, David. English as a Global Language. Second edition. Cambridge University Press, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.