Cita APA (7a ed.)
Hart, G. (2004). The fourth power: A grand strategy for the United States in the twenty-first century. Oxford University Press.
Cita Chicago Style (17a ed.)
Hart, Gary. The Fourth Power: A Grand Strategy for the United States in the Twenty-first Century. New York: Oxford University Press, 2004.
Cita MLA (9a ed.)
Hart, Gary. The Fourth Power: A Grand Strategy for the United States in the Twenty-first Century. Oxford University Press, 2004.
Precaución: Estas citas no son 100% exactas.