Nicholson, Oliver (toim.): The Oxford Dictionary of Late Antiquity, s. 1220–1221. Oxford University Press, 2018. ISBN 9780192562463Teoksen verkkoversio.
Smith, Philip: A History of the Ancient World: From the Earliest Records to the Fall of the Western Empire, s. 707–709. (Nide 3. Painos 4) J. Murray, 1873. Teoksen verkkoversio.
Bury, John Bagnell: The Rise and Decline of the Roman Empire: The Golden Age of the Empire from Julius Caesar Until Marcus Aurelius & the Period of the Late Empire From the Death of Theodosius I to the Death of Justinian, s. 556. e-artnow, 2019. Teoksen verkkoversio.
Kulikowski, Michael: The Tragedy of Empire: From Constantine to the Destruction of Roman Italy, s. 12. Harvard University Press, 2019. ISBN 9780674660137Teoksen verkkoversio.
