Cita APA (7th ed.)

Toenjes, C. (2019). On Patrol: Operational English for German Law Enforcement Officers (2., enhanced ed.). Vlg. für Polizeiwissenschaft.

Cita Chicago (17th ed.)

Toenjes, Christopher. On Patrol: Operational English for German Law Enforcement Officers. 2., enhanced ed. Frankfurt [am Main]: Vlg. für Polizeiwissenschaft, 2019.

Cita MLA (8th ed.)

Toenjes, Christopher. On Patrol: Operational English for German Law Enforcement Officers. 2., enhanced ed. Vlg. für Polizeiwissenschaft, 2019.