Rachels, J. (1993). The elements of moral philosophy (2nd ed.). McGraw-hill.
芝加哥风格引文Rachels, James. The Elements of Moral Philosophy. 2nd ed. New York: McGraw-hill, 1993.
MLA引文Rachels, James. The Elements of Moral Philosophy. 2nd ed. McGraw-hill, 1993.
警告:这些引文格式不一定是100%准确.