ebrary, Inc, & Waterfield, R. (2000). The first philosophers: The presocratics and sophists. Oxford University Press.
Chicago-viite (17. p.)ebrary, Inc, ja Robin Waterfield. The First Philosophers: The Presocratics and Sophists. Oxford ; New York: Oxford University Press, 2000.
MLA-viite (9. p.)ebrary, Inc, ja Robin Waterfield. The First Philosophers: The Presocratics and Sophists. Oxford University Press, 2000.
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