1. Fumerton, R. (2004). Foundational justification. In John Greco (Ed.), Ernest Sosa and His Critics. Oxford: Blackwell.
2. Philosophical studies series;J Greco,2013
3. Jour, L., & Sosa, E. (2003). Epistemic justificaion: Internalism vs. externalism, foundations vs. virtues. Oxford: Blackwell.
4. Kornblith, H. (2004). Sosa on human and animal knowledge. In John Greco (Ed.), Ernest Sosa and His Critics. Oxford: Blackwell.
5. Kornblith, H. (2012). On reflection (p. 192). Oxford: Oxford University Press.