"Draper, H. (1978). Karl Marx's theory of revolution: "the politics of social classes, vol.-2". Monthly Review press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"Draper, Hal". Karl Marx's Theory of Revolution: "The Politics of Social Classes, Vol.-2". Monthly Review press, 1978.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"Draper, Hal". Karl Marx's Theory of Revolution: "The Politics of Social Classes, Vol.-2". Monthly Review press, 1978.
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