Welch, D. A. (2005). Painful choices: A theory of foreign policy change. Princeton University Press.
Tohutoru Kātū Chicago (17th ed.)Welch, David A. Painful Choices: A Theory of Foreign Policy Change. Princeton, N.J.: Princeton University Press, 2005.
Tohutoro MLA (9th ed.)Welch, David A. Painful Choices: A Theory of Foreign Policy Change. Princeton University Press, 2005.
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