1. Crombie, A.C. (1959) Medieval and Early Modern Science, Doubleday.
2. °Dreyer, J.L.E. (1905) History of Astronomy from Thales to Kepler, Cambridge University Press; reprint by Dover (1953).
3. ∗Duhem, P. (1959) Le Système du Monde, Histoire des doctrines cosmologiques de Platon à Copernic (10 vol.), Hermann, Paris.
4. Freeman, K. (1983a) Ancilla – To the Pre-Socratic Philosophers – A Complete Translation of the Fragments in Diels, Harvard University Press; extracts available on
http://www.sacred-texts.com/cla/app/app18.htm
(Xenophanes),
http://www.sacred-texts.com/cla/app/app54.htm
(Anaxagoras), etc.
5. Freeman, K. (1983b), The Presocratic Philosophers, a companion to DIELS Fragmente, Blackwell, London.