McDougall, W. A. (1985). The heavens and the earth: A political history of the space age. Basic Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMcDougall, Walter A. The Heavens and the Earth: A Political History of the Space Age. New York: Basic Books, 1985.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMcDougall, Walter A. The Heavens and the Earth: A Political History of the Space Age. Basic Books, 1985.
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