Ayer, A. J., & Ayer, A. J. (1985). Freedom and morality and other essays ((Repr.).). Clarendon Press.
芝加哥风格引文Ayer, Alfred J., 与 Alfred Jules Ayer. Freedom and Morality and Other Essays. (Repr.). Oxford: Clarendon Press, 1985.
MLA引文Ayer, Alfred J., 与 Alfred Jules Ayer. Freedom and Morality and Other Essays. (Repr.). Clarendon Press, 1985.
警告：这些引文格式不一定是100％准确.