Gifford, P., & ed. The National interests of the United States in foreign policy. University Press of America.
Citace podle Chicago (17th ed.)Gifford, Prosser, a ed. The National Interests of the United States in Foreign Policy. Washington, D.C.: University Press of America.
Citace podle MLA (9th ed.)Gifford, Prosser, a ed. The National Interests of the United States in Foreign Policy. University Press of America.
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