APA (7th ed.) Citation

Spergel, I. A. (2009). Gang databases: To be or not to be. Criminology & public policy, 8(4), 667-674.

Chicago Style (17th ed.) Citation

Spergel, Irving A. "Gang Databases: To Be or Not to Be." Criminology & Public Policy 8, no. 4 (2009): 667-674.

MLA (9th ed.) Citation

Spergel, Irving A. "Gang Databases: To Be or Not to Be." Criminology & Public Policy, vol. 8, no. 4, 2009, pp. 667-674.