Thomas, A., Regan, R. J., & Davies, B. (2003). On evil. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Thomas, Aquinas, Richard J. Regan, agus Brian Davies. On Evil. Oxford ; New York: Oxford University Press, 2003.
Lua MLA (9ú heag.)Thomas, Aquinas, et al. On Evil. Oxford University Press, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.