ISBN 0-582-06476-7* Gibbon, Edward The Battle of Tours, "Decline and Fall of the Roman Empire"* Grant, Michael "History of Rome"* Grunebaum, Gustave von (2005).
ISBN 0-582-06476-7* Gibbon, Edward The Battle of Tours, "Decline and Fall of the Roman Empire"* Grant, Michael "History of Rome"* Grunebaum, Gustave von (2005).