Norman, R. (1983). The moral philosophers: An introduction to ethics. Clarendon Press.
Lua i Stíl Chicago (17ú heag.)Norman, Richard. The Moral Philosophers: An Introduction to Ethics. Oxford: Clarendon Press, 1983.
Lua MLA (9ú heag.)Norman, Richard. The Moral Philosophers: An Introduction to Ethics. Clarendon Press, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.