Cita APA (7a ed.)

Potter, D. S. (2006). A companion to the Roman Empire. Blackwell.

Cita Chicago Style (17a ed.)

Potter, D. S. A Companion to the Roman Empire. Oxford [etc.]: Blackwell, 2006.

Cita MLA (9a ed.)

Potter, D. S. A Companion to the Roman Empire. Blackwell, 2006.