APA (7th ed.) Citation

Knox, J., & MacDonald, S. (2001). Diary of a police officer. Police research series.

Chicago Style (17th ed.) Citation

Knox, Jim, and Stephen MacDonald. "Diary of a Police Officer." Police Research Series 2001.

MLA (9th ed.) Citation

Knox, Jim, and Stephen MacDonald. "Diary of a Police Officer." Police Research Series, 2001.

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