Bibliography

Saint Thomas Aquinas. (7/1/2010). In Columbia Electronic Encyclopedia (6th ed., pp. 1-2).

Magee, J. M. (1996-2008). Thomistic Philosophy: the enduring thought of Saint Thomas Aquinas. 
           Retrieved from http://www.aquinasonline.com/

Gracyk, T. (2004) St. Thomas Aquinas: The Existence of god can be proved in five ways. Retrieved from
           http://www.mnstate.edu/gracyk/courses/web%20publishing/aquinasFiveWays_ArgumentAnalysis.htm

Strayer, J. (n.d.). St. Thomas Aquinas and the Problem of Evil (PDF Document). Retrieved from
           http://users.ipfw.edu/strayerj/Intro-Phil/Handouts/Aquinas on Evil.PDF

Aquinas, T. (1947). Summa Theologica (Translation). Retrieved from Sacred Texts database.