Tannsjo, Torbjorn
Understanding ethics: An Introduction to moral theory
Edinburgh University Press, 2010
 Buku Teks
Albert, Ethel M.
Great traditions in ethics: an introduction
American Book Company, 1953
 Buku Teks
Smith, Michael
Ethics and the a priority: selected essays on moral psychology and meta-ethics
Cambridge University Press , 2004
 Buku Teks
Irrealism in ethics
Bart Streumer.
Wiley-Blackwell , 2014
 Buku Teks
Kagan, Shelly
Normative Ethics
Westview Press, 1997
 Buku Teks