Cita APA (7th ed.)
Dukes, P. (2000). The superpowers: A short history. Routledge.
Cita Chicago (17th ed.)
Dukes, Paul. The Superpowers: A Short History. London: Routledge, 2000.
Cita MLA (9th ed.)
Dukes, Paul. The Superpowers: A Short History. Routledge, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.