Não informado. (1949). Historic preservation. National Trust for Historic Preservation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Historic Preservation. Washington: National Trust for Historic Preservation, 1949.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Historic Preservation. National Trust for Historic Preservation, 1949.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.