Crystal, D. (2003). English as a global language (2nd ed.). Cambridge University Press.
芝加哥风格引文Crystal, David. English as a Global Language. 2nd ed. New York ; New Delhi: Cambridge University Press, 2003.
MLA引文Crystal, David. English as a Global Language. 2nd ed. Cambridge University Press, 2003.
警告：这些引文格式不一定是100％准确.