Rachels, J. (1999). The elements of moral philosophy (3rd ed.). McGraw-Hill College.
Chicago Style (17th ed.) CitationRachels, James. The Elements of Moral Philosophy. 3rd ed. Boston: McGraw-Hill College, 1999.
MLA引文Rachels, James. The Elements of Moral Philosophy. 3rd ed. McGraw-Hill College, 1999.
警告:這些引文格式不一定是100%准確.