Norman, R. (1983). The moral philosophers: An introduction to ethics. Clarendon Press.
芝加哥风格引文Norman, Richard. The Moral Philosophers: An Introduction to Ethics. Oxford: Clarendon Press, 1983.
MLA引文Norman, Richard. The Moral Philosophers: An Introduction to Ethics. Clarendon Press, 1983.
警告：这些引文格式不一定是100％准确.