Cita APA (7a ed.)

Lieber, R. J. (2005). The American era: Power and strategy for the 21st century. Cambridge University Press.

Cita Chicago Style (17a ed.)

Lieber, Robert J. The American Era: Power and Strategy for the 21st Century. Cambridge ; New York: Cambridge University Press, 2005.

Cita MLA (8a ed.)

Lieber, Robert J. The American Era: Power and Strategy for the 21st Century. Cambridge University Press, 2005.