Hardin, R. (2007). David Hume: Moral and political theorist. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Hardin, Russell. David Hume: Moral and Political Theorist. Oxford, United Kingdom: Oxford University Press, 2007.
Lua MLA (9ú heag.)Hardin, Russell. David Hume: Moral and Political Theorist. Oxford University Press, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.