Ball, G. W. (1976). Diplomacy for a crowded world: An american foreign policy. Little, Brown.
Lua i Stíl Chicago (17ú heag.)Ball, George W. Diplomacy for a Crowded World: An American Foreign Policy. Boston, Mass. [u.a.]: Little, Brown, 1976.
Lua MLA (8ú heag.)Ball, George W. Diplomacy for a Crowded World: An American Foreign Policy. Little, Brown, 1976.
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