APA (7th ed.) Citation

Barton, A., & Evans, R. (1999). Proactive policing on Merseyside. Police research series.

Chicago Style (17th ed.) Citation

Barton, Alana, and Roger Evans. "Proactive Policing on Merseyside." Police Research Series 1999.

MLA (9th ed.) Citation

Barton, Alana, and Roger Evans. "Proactive Policing on Merseyside." Police Research Series, 1999.

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