Sapin, B. M. (1966). The making of United States foreign policy. Brookings Institution.
Lua i Stíl Chicago (17ú heag.)Sapin, Burton M. The Making of United States Foreign Policy. Washington: Brookings Institution, 1966.
Lua MLA (9ú heag.)Sapin, Burton M. The Making of United States Foreign Policy. Brookings Institution, 1966.
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