Dyfyniad APA

Combs, J. A., & Combs, A. G. (1997). The history of American foreign policy (2nd ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Combs, Jerald A., and Arthur G. Combs. The History of American Foreign Policy. 2nd ed. New York: McGraw-Hill, 1997.

Dyfyniad MLA

Combs, Jerald A., and Arthur G. Combs. The History of American Foreign Policy. 2nd ed. McGraw-Hill, 1997.

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