Waterfield, R. (2000). The first philosophers: The pre-Socratics and sophists. Oxford University Press.
Citazione stile Chigago Style (17a edizione)Waterfield, Robin. The First Philosophers: The Pre-Socratics and Sophists. Oxford, [England]: Oxford University Press, 2000.
Citatione MLA (9a ed.)Waterfield, Robin. The First Philosophers: The Pre-Socratics and Sophists. Oxford University Press, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.