International Colloquium on Ancient Philosophy & Kerferd, G. B. (1981). The sophists and their legacy: Proceedings of the fourth International Colloquium on Ancient Philosophy, held in cooperation with Projektgruppe Altertumswissenschaften der Thyssen Stiftung at Bad Homburg, 29th August-1st September 1979. Franz Steiner.
Cita Chicago Style (17a ed.)International Colloquium on Ancient Philosophy y George Briscoe Kerferd. The Sophists and Their Legacy: Proceedings of the Fourth International Colloquium on Ancient Philosophy, Held in Cooperation with Projektgruppe Altertumswissenschaften Der Thyssen Stiftung at Bad Homburg, 29th August-1st September 1979. Wiesbaden: Franz Steiner, 1981.
Cita MLA (9a ed.)International Colloquium on Ancient Philosophy y George Briscoe Kerferd. The Sophists and Their Legacy: Proceedings of the Fourth International Colloquium on Ancient Philosophy, Held in Cooperation with Projektgruppe Altertumswissenschaften Der Thyssen Stiftung at Bad Homburg, 29th August-1st September 1979. Franz Steiner, 1981.
