Driver, Julia. Ethics: The Fundamentals. Vol. 1. Malden, Massachusetts: Blackwell Publishing, 2006. Web. <https://ebookcentral.proquest.com/lib/gla/detail.action?docID=1204064>.
Grube, G. M. A. and Plato. The Republic. Ed. C. D. C. Reeve. Indianapolis, Indiana: Hackett Publishing Company, 1992. Web. <https://ebookcentral.proquest.com/lib/gla/detail.action?docID=735561>.
Rowe, C. J., Sarah Broadie, and Aristotle. Nicomachean Ethics. Oxford: Oxford University Press, 2002. Print.
Taylor, C. C. W. and Plato. Protagoras. Oxford: Oxford University Press, 2002. Print.
