Arnold, F. S. (1943). Sancta Sophia and how the church came to Russia. Three Hierarchs Seminary Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रArnold, Frederick Sherman. Sancta Sophia and How the Church Came to Russia. Maitland, Fl: Three Hierarchs Seminary Press, 1943.
एमएलए (8वां संस्करण) प्रशस्ति पत्रArnold, Frederick Sherman. Sancta Sophia and How the Church Came to Russia. Three Hierarchs Seminary Press, 1943.
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