Varelli, G. (2013). Two newly discovered tenth-century Organa. Cambridge University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVarelli, G. Two Newly Discovered Tenth-century Organa. Cambridge University Press, 2013.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVarelli, G. Two Newly Discovered Tenth-century Organa. Cambridge University Press, 2013.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.