Hay, C. (2008). The theory of knowledge: A coursebook. Luttherworth Press.
芝加哥风格引文Hay, Clare. The Theory of Knowledge: A Coursebook. Cambridge, U.K.: Luttherworth Press, 2008.
MLA引文Hay, Clare. The Theory of Knowledge: A Coursebook. Luttherworth Press, 2008.
警告：这些引文格式不一定是100％准确.