APA (7th ed.) Citation

Della Porta, D., & Peterson, A. (2005). Policing political protest after Seattle. Policing & society.

Chicago Style (17th ed.) Citation

Della Porta, Donatella, and Abby Peterson. "Policing Political Protest After Seattle." Policing & Society 2005.

MLA (8th ed.) Citation

Della Porta, Donatella, and Abby Peterson. "Policing Political Protest After Seattle." Policing & Society, 2005.

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