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 (9th 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.