Hadot, P. (2002). What is ancient philosophy? Belknap Press of Harvard University Press.
芝加哥风格引文Hadot, Pierre. What Is Ancient Philosophy? Cambridge, Mass: Belknap Press of Harvard University Press, 2002.
MLA引文Hadot, Pierre. What Is Ancient Philosophy? Belknap Press of Harvard University Press, 2002.
警告：这些引文格式不一定是100％准确.