ebrary, Inc, & Waterfield, R. (2000). The first philosophers: The presocratics and sophists. Oxford University Press.
Citazione stile Chigago Style (17a edizione)ebrary, Inc, e Robin Waterfield. The First Philosophers: The Presocratics and Sophists. Oxford ; New York: Oxford University Press, 2000.
Citatione MLA (9a ed.)ebrary, Inc, e Robin Waterfield. The First Philosophers: The Presocratics and Sophists. Oxford University Press, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.