APA (7th ed.) Citation

Harries, K. D. (1990). Geographic factors in policing. Police Executive Research Forum.

Chicago Style (17th ed.) Citation

Harries, Keith D. Geographic Factors in Policing. Washington, DC: Police Executive Research Forum, 1990.

MLA (9th ed.) Citation

Harries, Keith D. Geographic Factors in Policing. Police Executive Research Forum, 1990.

Warning: These citations may not always be 100% accurate.