Rachels, J. (1993). The elements of moral philosophy (2nd ed.). New York: McGraw-Hill.
Chicago Stili AlıntıRachels, James. The Elements of Moral Philosophy. 2nd ed. New York: McGraw-Hill, 1993.
MLA AlıntıRachels, James. The Elements of Moral Philosophy. 2nd ed. New York: McGraw-Hill, 1993.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..