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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Perry, 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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Perry, Richard L. Sources of Our Liberties: Documentary Origins of Individual Liberties in the United States Constitution and Bill of Rights. American Bar Foundation, 1959.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.