Παραπομπή σε μορφή APA (7η εκδ.)

Westphal, K. R. (2016). How Hume and Kant reconstruct natural law: Justifying strict objectivity without debating moral realism. Oxford University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Westphal, Kenneth R. How Hume and Kant Reconstruct Natural Law: Justifying Strict Objectivity Without Debating Moral Realism. Oxford: Oxford University Press, 2016.

Παραπομπή σε μορφή MLA (8th εκδ.)

Westphal, Kenneth R. How Hume and Kant Reconstruct Natural Law: Justifying Strict Objectivity Without Debating Moral Realism. Oxford University Press, 2016.