Edberg, R. (1966). On the shred of the cloud: Reflections on man and his enviroment. Harper & Row.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEdberg, Rolf. On the Shred of the Cloud: Reflections on Man and His Enviroment. London: Harper & Row, 1966.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEdberg, Rolf. On the Shred of the Cloud: Reflections on Man and His Enviroment. Harper & Row, 1966.
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