1. Aijaz, I., J. McKeown-Green, and A. Webster. 2013. Burdens of Proof and the Case for Unevenness. Argumentation 27: 259–282.
2. Alston, W.P. 1976. Two Types of Foundationalism. Journal of Philosophy 73 (7): 165–185.
3. Audi, R. 1993. The Structure of Justification. Cambridge: Cambridge University Press.
4. Bealer, G. 1996. On the Possibility of Philosophical Knowledge. Philosophical Perspectives 10: 1–34.
5. Brooks, T. 2011. In Your Judgment, Which of the Following is the Better Philosophy Journal? All Our Ideas. http://www.allourideas.org/philosophyjournals/results?all=true. Accessed 17 June 2015.