Burnet, John (1957) [1892]. Early Greek Philosophy. The Meridian Library. (reprinted from the 4th edition, 1930; the first edition was published in 1892). An online presentation of the Third Editionเก็บถาวร 2015-12-28 ที่ เวย์แบ็กแมชชีน can be found in the Online Books Library of the University of Pennsylvania.
Kirk, G.S. (1957). The Presocratic Philosophers. Cambridge: University Press. {{cite book}}: ไม่รู้จักพารามิเตอร์ |coauthors= ถูกละเว้น แนะนำ (|author=) (help) (subsequently reprinted)
G. E. R. Lloyd. Early Greek Science: Thales to Aristotle.
Nahm, Milton C. (1962) [1934]. Selections from Early Greek Philosophy. Appleton-Century-Crofts, Inc.
Pliny the Elder; The Natural History (eds. John Bostock, M.D., F.R.S. H.T. Riley, Esq., B.A.) London. Taylor and Francis, Red Lion Court, Fleet Street. (1855). Online version at the Perseus Digital Library.
