Cita APA (7a ed.)

Hartmann, F. H., & Wendzel, R. L. (1994). America's foreign policy in a changing world. HarperCollins College Publishers.

Cita Chicago Style (17a ed.)

Hartmann, Frederick H., y Robert L. Wendzel. America's Foreign Policy in a Changing World. New York: HarperCollins College Publishers, 1994.

Cita MLA (9a ed.)

Hartmann, Frederick H., y Robert L. Wendzel. America's Foreign Policy in a Changing World. HarperCollins College Publishers, 1994.