Singh, R. (2003). American government and politics: A concise introduction. SAGE Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSingh, Robert. American Government and Politics: A Concise Introduction. London ; Thousand Oaks, Calif.: SAGE Publications, 2003.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSingh, Robert. American Government and Politics: A Concise Introduction. SAGE Publications, 2003.
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