Allen, R. E. (1991). Greek philosophy: Thales to Aristotle (3rd ed., rev. and expanded.). Free Press.
芝加哥风格引文Allen, Reginald E. Greek Philosophy: Thales to Aristotle. 3rd ed., rev. and expanded. New York: Free Press, 1991.
MLA引文Allen, Reginald E. Greek Philosophy: Thales to Aristotle. 3rd ed., rev. and expanded. Free Press, 1991.
警告：这些引文格式不一定是100％准确.