Paterson, T. G., Clifford, J. G., & Hagan, K. J. (1977). American foreign policy: A history. D. C. Heath.
Lua i Stíl Chicago (17ú heag.)Paterson, Thomas G., J. Garry Clifford, agus Kenneth J. Hagan. American Foreign Policy: A History. Lexington, Mass.: D. C. Heath, 1977.
Lua MLA (8ú heag.)Paterson, Thomas G., et al. American Foreign Policy: A History. D. C. Heath, 1977.
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