APA (7th ed.) Citation

Hardt, M., & Hardt, M. (2000). Empire. Harvard University Press.

Chicago Style (17th ed.) Citation

Hardt, Michael, and Michael;Negri Hardt. Empire. Harvard University Press, 2000.

MLA (9th ed.) Citation

Hardt, Michael, and Michael;Negri Hardt. Empire. Harvard University Press, 2000.

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