Prokopczyk, C. (1980). Truth and reality in Marx and Hegel: A reassessment. University of Massachusetts Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रProkopczyk, Czeslaw. Truth and Reality in Marx and Hegel: A Reassessment. University of Massachusetts Press, 1980.
एमएलए (9वां संस्करण) प्रशस्ति पत्रProkopczyk, Czeslaw. Truth and Reality in Marx and Hegel: A Reassessment. University of Massachusetts Press, 1980.
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