Ancient philosophy

References and further reading

	Algra, K., Barnes, J., Mansfeld, J. and Schofield, M. (1998) The Cambridge History of Hellenistic Philosophy, Cambridge: Cambridge University Press. (Bridges the gap between Guthrie (1962–81) and Armstrong (1967).)
	Armstrong, A.H. (1967) The Cambridge History of Later Greek and Early Medieval Philosophy, Cambridge: Cambridge University Press. (Continuation of Guthrie (1962–81), but skipping Hellenistic philosophy.)
	Guthrie, W.K.C. (1962–81) A History of Greek Philosophy, Cambridge: Cambridge University Press, 6 vols. (The major work of its kind in English, but does not go beyond Aristotle.)
	Zeyl, D. (1997) Encyclopedia of Ancient Philosophy, Westport, CT: Greenwood Press. (A comprehensive guide to the Greek and Roman philosophers.)