ebrary, Inc, & Davis, R. T. (2010). U.S. foreign policy and national security: Chronology and index for the 20th century. Praeger Security International.
Lua i Stíl Chicago (17ú heag.)ebrary, Inc, agus Robert T. Davis. U.S. Foreign Policy and National Security: Chronology and Index for the 20th Century. Santa Barbara, Calif.: Praeger Security International, 2010.
Lua MLA (9ú heag.)ebrary, Inc, agus Robert T. Davis. U.S. Foreign Policy and National Security: Chronology and Index for the 20th Century. Praeger Security International, 2010.
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