Cita APA (7a ed.)

Campion, J., López, L., & Payen, G. (2019). European police forces and law enforcement in the First World War. Palgrave Macmillan.

Cita Chicago Style (17a ed.)

Campion, Jonas, Laurent López, y Guillaume Payen. European Police Forces and Law Enforcement in the First World War. Cham: Palgrave Macmillan, 2019.

Cita MLA (9a ed.)

Campion, Jonas, et al. European Police Forces and Law Enforcement in the First World War. Palgrave Macmillan, 2019.