, 2013, Introduction to conceptual foundations, in J. Diller & A. Kasher (eds.), Models of God and alternative ultimate realities, Dordrecht, Springer, pp. 13-17.
, 1995, 'Plantinga on epistemic warrant', Philosophy and Phenomenological Research 55 (2), 421-426.
, 1993, 'Belief, justification and knowledge: an introduction to epistemology', Philosophy and Phenomenological Research 53, 480-484.
, 1990a, 'Epistemic justification and psychological realism', Synthese 85 (2), 199-230.