Cita APA (7a ed.)

Purpura, P. P. (2001). Police and community: Concepts and cases. Allyn and Bacon.

Cita Chicago Style (17a ed.)

Purpura, Philip P. Police and Community: Concepts and Cases. Boston, Mass. [u.a.]: Allyn and Bacon, 2001.

Cita MLA (8a ed.)

Purpura, Philip P. Police and Community: Concepts and Cases. Allyn and Bacon, 2001.