Von Eckardt, W., & Gottmann, J. M. (1964). The challenge of Megalopolis, a graphic presentation of the urbanized Northeastern Seaboard of the United States. MacMillan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVon Eckardt, Wolf, और Jean. Megapolis Gottmann. The Challenge of Megalopolis, a Graphic Presentation of the Urbanized Northeastern Seaboard of the United States. New Yorkn: MacMillan, 1964.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVon Eckardt, Wolf, और Jean. Megapolis Gottmann. The Challenge of Megalopolis, a Graphic Presentation of the Urbanized Northeastern Seaboard of the United States. MacMillan, 1964.
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