Irwin, T. (2013). Sympathy and the Basis of Morality. John Wiley and Sons.
Lua i Stíl Chicago (17ú heag.)Irwin, T. Sympathy and the Basis of Morality. John Wiley and Sons, 2013.
Lua MLA (9ú heag.)Irwin, T. Sympathy and the Basis of Morality. John Wiley and Sons, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.