Cita APA (7a ed.)

Eck, J. E. (1984). Using research: A primer for law enforcement managers. Police Executive Research Forum [u.a.].

Cita Chicago Style (17a ed.)

Eck, John E. Using Research: A Primer for Law Enforcement Managers. Washington, D.C. [u.a.]: Police Executive Research Forum [u.a.], 1984.

Cita MLA (8a ed.)

Eck, John E. Using Research: A Primer for Law Enforcement Managers. Police Executive Research Forum [u.a.], 1984.