Παραπομπή σε μορφή APA (7η εκδ.)

Porter, S. L. (2006). Restoring the foundations of epistemic justification: A direct realist and conceptualist theory of foundationalism. Lexington Books.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Porter, Steven L. Restoring the Foundations of Epistemic Justification: A Direct Realist and Conceptualist Theory of Foundationalism. Lanham: Lexington Books, 2006.

Παραπομπή σε μορφή MLA (8th εκδ.)

Porter, Steven L. Restoring the Foundations of Epistemic Justification: A Direct Realist and Conceptualist Theory of Foundationalism. Lexington Books, 2006.