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.1209, e-artnow
Edward Gibbon (1830). “The History Of The Decline And Fall Of The Roman Empire. By Edward Gibbon, Esq. Printed From The Edition In Twelve Volumes. With An Introductory Memoir Of The Author, By William Youngman”, p.913
Edward Gibbon (2016). “EDWARD GIBBON Premium Collection: Historiographical Works, Memoirs & Letters: Including "The History of the Decline and Fall of the Roman Empire”, p.2148, e-artnow