Perry, R. L. (1959). Sources of our liberties: Documentary origins of individual liberties in the United States Constitution and Bill of rights. American Bar Foundation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPerry, Richard L. Sources of Our Liberties: Documentary Origins of Individual Liberties in the United States Constitution and Bill of Rights. [Chicago]: American Bar Foundation, 1959.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPerry, Richard L. Sources of Our Liberties: Documentary Origins of Individual Liberties in the United States Constitution and Bill of Rights. American Bar Foundation, 1959.
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