Berlin, I., & Hardy, . H. (2006). Political ideas in the romantic age: Their rise and influence on modern thought. Princeton University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Berlin, Isaiah, و Henry Hardy. Political Ideas in the Romantic Age: Their Rise and Influence on Modern Thought. New Jerssey: Princeton University Press, 2006.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Berlin, Isaiah, و Henry Hardy. Political Ideas in the Romantic Age: Their Rise and Influence on Modern Thought. Princeton University Press, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.