ebrary, Inc, & Shafer-Landau, R. (2006). Oxford studies in metaethics. Clarendon Press ; Oxford University Press.
Lua i Stíl Chicago (17ú heag.)ebrary, Inc, agus Russ Shafer-Landau. Oxford Studies in Metaethics. Oxford : New York: Clarendon Press ; Oxford University Press, 2006.
Lua MLA (9ú heag.)ebrary, Inc, agus Russ Shafer-Landau. Oxford Studies in Metaethics. Clarendon Press ; Oxford University Press, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.