Allen, R. E. (1966). Greek philosophy: Thales to Aristotle. The Free press.
芝加哥风格引文Allen, Reginald E. Greek Philosophy: Thales to Aristotle. New York: The Free press, 1966.
MLA引文Allen, Reginald E. Greek Philosophy: Thales to Aristotle. The Free press, 1966.
警告：这些引文格式不一定是100％准确.