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Folly, Martin; Palmer, Niall. The A to Z of U.S. Diplomacy from World War I through World War II. page_21. Scarecrow Press. 2010-04-20 [2023-09-05]. ISBN 978-1-4616-7241-8. (原始内容存档于2023-10-31) (英语).
Folly, Martin; Palmer, Niall. The A to Z of U.S. Diplomacy from World War I through World War II. page_21. Scarecrow Press. 2010-04-20 [2023-09-05]. ISBN 978-1-4616-7241-8. (原始内容存档于2023-10-31) (英语).