Guthrie W K C. (1997). The greek philosophers: From thales to Aristotle. Routledge.
Chicago Style aipamenaGuthrie W K C. The Greek Philosophers: From Thales to Aristotle. London: Routledge, 1997.
MLA aipamenaGuthrie W K C. The Greek Philosophers: From Thales to Aristotle. Routledge, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.