Herrin, J., & Nelson, J. (2016). Ravenna: Its role in earlier medieval change and exchange. University of London Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHerrin, Judith, और Jinty Nelson. Ravenna: Its Role in Earlier Medieval Change and Exchange. London: University of London Press, 2016.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHerrin, Judith, और Jinty Nelson. Ravenna: Its Role in Earlier Medieval Change and Exchange. University of London Press, 2016.
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