Kant, I., & Gregor, M. J. (1998). Groundwork of the metaphysics of morals. Cambridge Univ..
Lua i Stíl Chicago (17ú heag.)Kant, Immanuel, agus Mary J. Gregor. Groundwork of the Metaphysics of Morals. London: Cambridge Univ., 1998.
Lua MLA (9ú heag.)Kant, Immanuel, agus Mary J. Gregor. Groundwork of the Metaphysics of Morals. Cambridge Univ., 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.