References
James E. Taylor
Epistemic justification and psychological realism
1990
Synthese 85/2
Belief, justification and knowledge: an introduction to epistemology
1993
Philosophy and Phenomenological Research 53
Plantinga on epistemic warrant
1995
Philosophy and Phenomenological Research 55/2
Introduction to conceptual foundations
2013
in: Models of God and alternative ultimate realities, Dordrecht : Springer