APA (7th ed.) Citation

Toch, H., & Grant, J. D. (1991). Police as problem solvers. Plenum Pr.

Chicago Style (17th ed.) Citation

Toch, Hans, and James D. Grant. Police as Problem Solvers. New York [u.a.]: Plenum Pr, 1991.

MLA (9th ed.) Citation

Toch, Hans, and James D. Grant. Police as Problem Solvers. Plenum Pr, 1991.