Crystal, D. (2003). English as a global language (2nd ed.). Cambridge University Press.
Citación estilo ChicagoCrystal, David. English as a Global Language. 2nd ed. Cambridge, UK: Cambridge University Press, 2003.
Cita MLACrystal, David. English as a Global Language. 2nd ed. Cambridge University Press, 2003.
Warning: These citations may not always be 100% accurate.