ebrary, Inc, & Davis, R. T. (2010). U.S. foreign policy and national security: Chronology and index for the 20th century. Praeger Security International.
Chicago-viite (17. p.)ebrary, Inc, ja Robert T. Davis. U.S. Foreign Policy and National Security: Chronology and Index for the 20th Century. Santa Barbara, Calif.: Praeger Security International, 2010.
MLA-viite (9. p.)ebrary, Inc, ja Robert T. Davis. U.S. Foreign Policy and National Security: Chronology and Index for the 20th Century. Praeger Security International, 2010.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.