Kant, I., & Gregor, M. (1996). The metaphysics of morals. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Kant, Immanuel, agus Mary Gregor. The Metaphysics of Morals. New York: Cambridge University Press, 1996.
Lua MLA (9ú heag.)Kant, Immanuel, agus Mary Gregor. The Metaphysics of Morals. Cambridge University Press, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.