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Thomas Carlyle, Rodger L. Tarr, Mark Engel (2000). “Sartor Resartus: The Life and Opinions of Herr Teufelsdröckh in Three Books”, p.50, Univ of California Press
Thomas Carlyle, Edwin Markham (1842). “On Heroes, Hero-worship, and the Heroic in History: Six Lectures, Reported, with Emendations and Additions”, p.215
Thomas Carlyle, Rodger L. Tarr, Mark Engel (2000). “Sartor Resartus: The Life and Opinions of Herr Teufelsdröckh in Three Books”, p.123, Univ of California Press