Cita APA (7a ed.)

Parker, G. (2004). Sovereign city: The city-state through history. Reaktion.

Cita Chicago Style (17a ed.)

Parker, Geoffrey. Sovereign City: The City-state Through History. London: Reaktion, 2004.

Cita MLA (9a ed.)

Parker, Geoffrey. Sovereign City: The City-state Through History. Reaktion, 2004.