APA (7th ed.) Citation

Negri, A., Hardt, M., Zolo, D., & Emery, E. (2008). Reflections on empire (English ed.). Polity.

Chicago Style (17th ed.) Citation

Negri, Antonio, Michael Hardt, Danilo Zolo, and Ed Emery. Reflections on Empire. English ed. Cambridge, UK: Polity, 2008.

MLA (9th ed.) Citation

Negri, Antonio, et al. Reflections on Empire. English ed. Polity, 2008.