ebrary, Inc, Polin, C., & Polin, R. (2009). Foundations of American political thought. Peter Lang.
芝加哥风格引文ebrary, Inc, Constance Polin, 与 Raymond Polin. Foundations of American Political Thought. New York: Peter Lang, 2009.
MLA引文ebrary, Inc, et al. Foundations of American Political Thought. Peter Lang, 2009.
警告：这些引文格式不一定是100％准确.