Edward Gibbon, Francis Parkman, William H. Prescott, Theodore Roosevelt (2012). “The Modern Library Essential World History 4-Book Bundle: The Decline and Fall of the Roman Empire (Abridged); Montcalm and Wolfe; History of the Conquest of Mexico; The Naval War of 1812”, p.648, Modern Library
Edward Gibbon (2016). “The Collected Works of Edward Gibbon: Historical Works, Autobiographical Writings and Private Letters, Including The History of the Decline and Fall of the Roman Empire”, p.1212, e-artnow