Coba jelasin Lihat pula dari Republik (Plato) dong

Russell, Bertrand, History of Western Philosophy. Simon & Schuster: New York, 1946. - Lihat: dua bab dalam Republic oleh Plato, ditambah dengan bab pengantar tentang asal usul konsep-konsep Plato: Buku I, Bagian 2, Bab 13-15. Sallis, John, Being and Logos: Reading the Platonic Dialogues, edisi ke-3, Indiana University Press: Bloomington, 1996, ps. 5.

Strauss, Leo, 'Plato' History of Political Philosophy edisi ke-3, University Of Chicago Press: Chicago, hlm. 34-68 1987.

Strauss, Leo, The City and Man. Chicago: University of Chicago Press, 1964.

Voegelin, Eric, Plato and Aristotle, Louisiana University Press, Baton Rouge, 1956.