Patten, A. (1999). Hegel's idea of freedom. Oxford University Press.
芝加哥风格引文Patten, Alan. Hegel's Idea of Freedom. Oxford ; New York: Oxford University Press, 1999.
MLA引文Patten, Alan. Hegel's Idea of Freedom. Oxford University Press, 1999.
警告：这些引文格式不一定是100％准确.