Cita APA

Crystal, D. (1997). English as a global language ([1st ed., 1st pr.].). Cambridge, United Kingdom: Cambridge University Press.

Citación estilo Chicago

Crystal, David. English As a Global Language. [1st ed., 1st pr.]. Cambridge, United Kingdom: Cambridge University Press, 1997.

Cita MLA

Crystal, David. English As a Global Language. [1st ed., 1st pr.]. Cambridge, United Kingdom: Cambridge University Press, 1997.