Cita APA (7a ed.)

Campbell, B. (1994). The Roman Army: 31 bC-aD 337 : a sourcebook. Routledge.

Cita Chicago Style (17a ed.)

Campbell, Brian. The Roman Army: 31 BC-aD 337 : A Sourcebook. London [etc.]: Routledge, 1994.

Cita MLA (9a ed.)

Campbell, Brian. The Roman Army: 31 BC-aD 337 : A Sourcebook. Routledge, 1994.