Sumber Artikel Romawi

Frank Frost Abbott (1901). A History and Description of Roman Political Institutions. Elibron Classics. ISBN 0-543-92749-0.

J. A. Crook, Law and Life of Rome, 90 BC–AD 212, 1967 (ISBN 0-8014-9273-4).

Arther Ferrill, The Fall of the Roman Empire: The Military Explanation, Thames and Hudson, 1988 (ISBN 0-500-27495-9).

Goldsworthy, Adrian. The Complete Roman Army, Thames and Hudson, 2003 (ISBN 0-500-05124-0).

Benjamin Isaac, "The Limits of Empire: the Roman Army in the East" Oxford University Press, 1992 (ISBN 0-19-814926-3).

Andrew Lintott, Imperium Romanum: Politics and administration, 1993 (ISBN 0-415-09375-9).

Edward Luttwak, The Grand Strategy of the Roman Empire, Johns Hopkins University Press, 1976/1979 (ISBN 0-8018-2158-4).