APA (7th ed.) Citation

Hay, C. (2008). The theory of knowledge: A coursebook. Luttherworth Press.

Chicago Style (17th ed.) Citation

Hay, Clare. The Theory of Knowledge: A Coursebook. Cambridge, U.K.: Luttherworth Press, 2008.

MLA (9th ed.) Citation

Hay, Clare. The Theory of Knowledge: A Coursebook. Luttherworth Press, 2008.