Frost, M. (2014). The lost companions and John Ruskin's Guild of St George: A revisionary history. Anthem Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFrost, Mark. The Lost Companions and John Ruskin's Guild of St George: A Revisionary History. London, [England] ; New York, New York: Anthem Press, 2014.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFrost, Mark. The Lost Companions and John Ruskin's Guild of St George: A Revisionary History. Anthem Press, 2014.
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