Ravenal, E. C. (1978). Never again: Learning from America's foreign policy failures. Temple University Press.
Citace podle Chicago (17th ed.)Ravenal, Earl C. Never Again: Learning from America's Foreign Policy Failures. Philadelphia: Temple University Press, 1978.
Citace podle MLA (9th ed.)Ravenal, Earl C. Never Again: Learning from America's Foreign Policy Failures. Temple University Press, 1978.
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