Sher, G. (1987). Moral philosophy: Selected readings. Harcourt Brace Jovanovich.
Lua i Stíl Chicago (17ú heag.)Sher, George. Moral Philosophy: Selected Readings. San Diego: Harcourt Brace Jovanovich, 1987.
Lua MLA (9ú heag.)Sher, George. Moral Philosophy: Selected Readings. Harcourt Brace Jovanovich, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.