Παραπομπή σε μορφή APA (7η εκδ.)

Velkley, R. L. (1989). Freedom and the end of reason: On the moral foundations of Kant's critical philosophy. The University of Chicago Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Velkley, Richard L. Freedom and the End of Reason: On the Moral Foundations of Kant's Critical Philosophy. Chicago: The University of Chicago Press, 1989.

Παραπομπή σε μορφή MLA (8th εκδ.)

Velkley, Richard L. Freedom and the End of Reason: On the Moral Foundations of Kant's Critical Philosophy. The University of Chicago Press, 1989.