1. Bentham, Jeremy. 2000. An Introduction to the Principles of Morals and Legislation. Kitchener: Batoche Books.
2. Carlsmith, Kevin M., John M. Darley, and Paul H. Robinson. 2002. Why Do We Punish? Deterrence and Just Deserts as Motives for Punishment. Journal of Personality and Social Psychology 83 (2): 284–299.
3. Chenoweth, Erica, and Maria Stephan. 2011. Why Civil Resistance Works: The Strategic Logic of Nonviolence. New York: Columbia University Press.
4. Clifford, William K. 1999. The Ethics of Belief. New York: Prometheus Books.
5. Doris, John M., and Stephen P. Stich. 2005. As a Matter of Fact: Empirical Perspectives on Ethics. In The Oxford Handbook of Contemporary Philosophy, ed. Frank Jackson and Michael Smith, 114–154. Oxford: Oxford University Press.