1. Armstrong, D. M. (1978). Nominalism and realism, Vol 1. CUP.
2. Carroll, L. (1895). What the Tortoise said to Achilles. Mind, 4(14), 278–280.
3. Elgin, C. (2009). Is understanding factive? In D. Pritchard, A. Miller, & A. Haddock (Eds.), Epistemic value. Oxford: Oxford University Press.
4. Elgin, C. (2006). From knowledge to understanding. In Hetherington Stephen (Ed.), Epistemology futures (pp. 199–215). Oxford: Clarendon.
5. Goldman, A. (1993). Epistemic folkways and scientific epistemology. Philosophical Issues. Vol. 3, Science and Knowledge 271–85.