Jelaskan Kutipan dari Valerius Valens

Lieu, Samuel N. C., Montserrat, Dominic. From Constantine to Julian: A Source History, Routledge, 1996.  (includes an English translation of Origo Constantini)

Odahl, Charles M. Constantine and the Christian Empire, Routledge, 2004.

Potter, David S. The Roman Empire at Bay AD 180–395, Routledge, 2004.