APA-referens

Guthrie, W. (1971). History of Greek philosophy: The earlier Persocratics and the Pythagoreans. Cambridge University Press.

Chicago-stil citat

Guthrie, W.K.C. History of Greek Philosophy: The Earlier Persocratics and the Pythagoreans. Cambridge University Press, 1971.

MLA-referens

Guthrie, W.K.C. History of Greek Philosophy: The Earlier Persocratics and the Pythagoreans. Cambridge University Press, 1971.