Cita APA (7th ed.)

Hardt, M., & Negri, A. (2001). Empire (First Harvard University Press paperback edition.). Harvard University Press.

Cita Chicago (17th ed.)

Hardt, Michael, i Antonio Negri. Empire. First Harvard University Press paperback edition. Cambridge, Massachusetts: Harvard University Press, 2001.

Cita MLA (9th ed.)

Hardt, Michael, i Antonio Negri. Empire. First Harvard University Press paperback edition. Harvard University Press, 2001.