McGrath, S. (2019). Moral knowledge. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)McGrath, Sarah. Moral Knowledge. Oxford, United Kingdom: Oxford University Press, 2019.
Lua MLA (9ú heag.)McGrath, Sarah. Moral Knowledge. Oxford University Press, 2019.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.