APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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