Johnson, P. (1985). Modern times: The world from the twenties to the eighties (1st Harper colophon ed.). Harper & Row.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJohnson, Paul. Modern Times: The World from the Twenties to the Eighties. 1st Harper colophon ed. New York: Harper & Row, 1985.
एमएलए (8वां संस्करण) प्रशस्ति पत्रJohnson, Paul. Modern Times: The World from the Twenties to the Eighties. 1st Harper colophon ed. Harper & Row, 1985.
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