Company, D. S. (1911). Windows of the Royal Bavarian Art Institute: Stained Glass Windows Designed and Executed by F.X. Zettler. Munich. Chicago and New York.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCompany, Daprato Statuary. Windows of the Royal Bavarian Art Institute: Stained Glass Windows Designed and Executed by F.X. Zettler. Munich. Chicago and New York, 1911.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCompany, Daprato Statuary. Windows of the Royal Bavarian Art Institute: Stained Glass Windows Designed and Executed by F.X. Zettler. Munich. Chicago and New York, 1911.
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