Spitz, D. (1964). Essays in the liberal idea of freedom. University of Arizona Press.
芝加哥风格引文Spitz, David. Essays in the Liberal Idea of Freedom. Tucson: University of Arizona Press, 1964.
MLA引文Spitz, David. Essays in the Liberal Idea of Freedom. University of Arizona Press, 1964.
警告：这些引文格式不一定是100％准确.