[1] Bentham, J. (1823). An Introduction to the Principles of Morals and Legislation. New York: Oxford University Press.
[2] Bethesda Game Studios (2008). Fallout 3. Rockville, MD: Bethesda Softworks, LLC.
[3] BioWare Corporation (2007). Mass Effect. Redmond, WA: Microsoft Game Studios.
[4] Cogburn, J., & Silcox, M. (2009). Philosophy Through Video Games. New York: Routledge.
[5] Death with Dignity National Center (2008). Washington Voters Pass Death with Dignity Act.
http://www.deathwithdignity.org/2008/11/04/washington-voters-approve-death-dignity-act/
[6] Günzel, S. (2007). The Irreducible Self: Image Studies of First Person Perspective Computer Games. Jena: Friedrich-Schiller-University.
[7] Kant, I. Translated by Abbott, T. K. (1785). Fundamental Principles of the Metaphysic of Morals. Champaign, IL: Project Gutenberg.
[8] Kaufmann, W. A. (1974). Nietzsche: Philosopher, Psychologist, Antichrist (4th ed). Princeton, NJ: Princeton University Press.
[9] Kaufmann, W. A., & Danto, A.C. (2005). Nietzsche as Philosopher. New York: Columbia University Press.
[10] Mateas, M., & Stern, A. (2003). Facade: An Experiment in Building a Fully-Realized Interactive Drama. Game Developers Conference, San Jose.
http://www.interactivestory.net/papers/MateasSternGDC03.pdf
[11] Mateas, M., & Stern, A. (2006), Facade. Portland, OR: Procedural Arts, LLC.
[12] Mill, J. S. (1979). Utilitarianism. Indianapolis, IN: Hackett.
[13] Nietzsche, F. Translated by Cowan, M. (1969). Beyond Good and Evil. Chicago, IL: Henry Regnery Company.
[14] Novack, P. (1996). The Vision of Nietzsche (1st ed.). Rockport, MA: Element.
[15] Oregon State Government (2007). Legislative Statute—Death with Dignity.
http://www.oregon.gov/DHS/ph/pas/ors.shtml
[16] Pojman, L. (1996). Philosophy: The Quest for Truth (3rd ed.). Belmont, CA: Wadsworth Publishing Company.
[17] Soccio, D. J. (2001). Archetypes of Wisdom: An Introduction to Philosophy (4th ed.). Belmont, CA: Wadsworth.
[18] Solomon, R. C, & Higgins, K. M. (2000). What Nietzsche Really Said (pp. 215-222). New York: Schocken Books.
[19] Titus, H. et al. (1995). Living Issues in Philosophy (9th ed.). New York: Oxford University Press Inc.
[20] Velasquez, M. (2002). Philosophy: A Text with Readings (8th ed.). Belmont, CA: Wadsworth Group.