Dukes, P. (2000). The superpowers: A short history. Routledge.
Cita Chicago Style (17a ed.)Dukes, Paul. The Superpowers: A Short History. London ; New York: Routledge, 2000.
Cita MLA (8a ed.)Dukes, Paul. The Superpowers: A Short History. Routledge, 2000.
Precaución: Estas citas no son 100% exactas.