GREENBERG, E. S. (1983). The American Political System A Radical Approach Edward S. Greenberg. Little, Brown.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGREENBERG, Edward S. The American Political System A Radical Approach Edward S. Greenberg. Little, Brown, 1983.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGREENBERG, Edward S. The American Political System A Radical Approach Edward S. Greenberg. Little, Brown, 1983.
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