Edward Gibbon (1837). “The Miscellaneous Works of Edward Gibbon: With Memoirs of His Life and Writing Composed by Himself, Illustrated from His Letters with Occasional Notes and Narrative”, p.92
Edward Gibbon (2016). “THE HISTORY OF THE DECLINE AND FALL OF THE ROMAN EMPIRE (All 6 Volumes): From the Height of the Roman Empire, the Age of Trajan and the Antonines - to the Fall of Byzantium; Including a Review of the Crusades, and the State of Rome during the Middle Ages”, p.1728, e-artnow