Cita APA (7a ed.)

Ballard, M., Mathias, P., Floyd, G., & Jordan, S. (1970). Rome and Empire: AD 41 - 122. Methuen.

Cita Chicago Style (17a ed.)

Ballard, Martin, Peter Mathias, Gareth Floyd, y Stuart Jordan. Rome and Empire: AD 41 - 122. London [u.a.]: Methuen, 1970.

Cita MLA (9a ed.)

Ballard, Martin, et al. Rome and Empire: AD 41 - 122. Methuen, 1970.