Clementson, T. (2005). Natural english. Oxford University Press.
芝加哥风格引文Clementson, Theresa. Natural English. Oxford: Oxford University Press, 2005.
MLA引文Clementson, Theresa. Natural English. Oxford University Press, 2005.
警告：这些引文格式不一定是100％准确.
APA引文