* Map of Corduene*Map of Gordyene between Assyria and Lake Van*Theodor Mommsen History of Rome, The Establishment of the Military Monarchy, Page 53*Decline and Fall of the Roman Empire*Roman History, by Cassius Dio, Book XXX*The History of the Decline and Fall of the Roman Empire, Vol.
* Map of Corduene* Map of Gordyene between Assyria and Lake Van* Theodor Mommsen History of Rome, The Establishment of the Military Monarchy, Page 53* Decline and Fall of the Roman Empire* Roman History, by Cassius Dio, Book XXX* The History of the Decline and Fall of the Roman Empire, Vol.