Dyfyniad APA

Hartmann, F. H., & Wendzel, R. L. (1994). American foreign policy in a changing world. HarperCollins College Pub.

Dyfyniad Arddull Chicago

Hartmann, Frederick H., and Robert L. Wendzel. American Foreign Policy in a Changing World. New York: HarperCollins College Pub, 1994.

Dyfyniad MLA

Hartmann, Frederick H., and Robert L. Wendzel. American Foreign Policy in a Changing World. HarperCollins College Pub, 1994.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.