Zimmerman. Photographic Architecture in the Twentieth Century. University of Minnesota Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रZimmerman. Photographic Architecture in the Twentieth Century. University of Minnesota Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रZimmerman. Photographic Architecture in the Twentieth Century. University of Minnesota Press.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.