Rugg, H. O. (1937). America's march toward democracy. Ginn and Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRugg, Harold Ordway. America's March Toward Democracy. Boston: Ginn and Company, 1937.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRugg, Harold Ordway. America's March Toward Democracy. Ginn and Company, 1937.
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