Gettier, Edmund L. (1963). “Is Justified True Belief Knowledge?”

Analysis

23, 121-3.

Klein, Peter (1981).

Certainty: A Refutation of Skepticism.

Minneapolis: University of Minnesota Press.

Kornblith, H., ed. (2001).

Epistemology: Internalism and Externalism.

Oxford: Blackwell.

Moore, G. E. (1959).

Unknown page