Friis Johansen, K. (1998). A history of ancient philosophy: From the beginnings to Augustine. Routledge.
芝加哥风格引文Friis Johansen, K. A History of Ancient Philosophy: From the Beginnings to Augustine. London ; New York: Routledge, 1998.
MLA引文Friis Johansen, K. A History of Ancient Philosophy: From the Beginnings to Augustine. Routledge, 1998.
警告：这些引文格式不一定是100％准确.