Walter Lippmann, Clinton Rossiter, James Lare (1982). “The Essential Lippmann: A Political Philosophy for Liberal Democracy”, p.37, Harvard University Press
Washington Irving (2015). “The Complete Travel Sketches and Memoirs of Washington Irving: Tales of The Alhambra, Abbotsford and Newstead Abby, A Tour on the Prairies & Tales of a Traveler: Autobiographical Writings, Travel Reports, Essays and Notes of the Prolific American Writer, Biographer and Historian, Author of The Legend of Sleepy Hollow, Rip Van Winkle and Old Christmas”, p.539, e-artnow
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