Παραπομπή σε μορφή APA (7η εκδ.)

Schiappa, E. (2003). Protagoras and logos: A study in Greek philosophy and rhetoric (2nd ed.). University of South Carolina Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Schiappa, Edward. Protagoras and Logos: A Study in Greek Philosophy and Rhetoric. 2nd ed. Columbia, S.C.: University of South Carolina Press, 2003.

Παραπομπή σε μορφή MLA (9th εκδ.)

Schiappa, Edward. Protagoras and Logos: A Study in Greek Philosophy and Rhetoric. 2nd ed. University of South Carolina Press, 2003.