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