Rachels, J. (2003). The elements of moral philosophy (4th ed.). McGraw - Hill.
Lua i Stíl Chicago (17ú heag.)Rachels, James. The Elements of Moral Philosophy. 4th ed. Boston: McGraw - Hill, 2003.
Lua MLA (9ú heag.)Rachels, James. The Elements of Moral Philosophy. 4th ed. McGraw - Hill, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.