Richter, D., & Duncan Richter. (2008). Why be good?: A historical introduction to ethics. New York: Oxford University Press.
Chicago Stili AlıntıRichter, Duncan, ve Duncan Richter. Why Be Good?: A Historical Introduction to Ethics. New York: Oxford University Press, 2008.
MLA AlıntıRichter, Duncan, ve Duncan Richter. Why Be Good?: A Historical Introduction to Ethics. New York: Oxford University Press, 2008.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..