Penn-Leiden Colloquium on Ancient Values University of Pennsylvania, ebrary, Inc, Sluiter, I., & Rosen, R. M. (2004). Free speech in classical antiquity. Brill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPenn-Leiden Colloquium on Ancient Values University of Pennsylvania, Inc ebrary, I. Sluiter, और Ralph Mark Rosen. Free Speech in Classical Antiquity. Leiden ; Boston: Brill, 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPenn-Leiden Colloquium on Ancient Values University of Pennsylvania, et al. Free Speech in Classical Antiquity. Brill, 2004.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.