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「始まり」のセンテンスは、世界大恐慌(秋本英一著、講談社学術文庫)を参考に増補した。
Archer, Jules (1963). Front-Line General: Douglas MacArthur. Julian Messner, Inc.. Library of Congress Catalog Card No. 63-16791
Archer, Jules (1973). The Plot to Seize the White House. Hawthorn Books, Inc.. Library of Congress Catalog Card No. 76-39261
Burner, David (1979). Herbert Hoover: A Public Life. Alfred A. Knopf. ISBN 0-394-46134-7
James, D. Clayton (1970). The Years of MacArthur, Volume I, 1880-1941. Houghton Mifflin Company. Library of Congress Catalog Card No. 76-108685
Ross, John (1996). Unintended Consequences. Accurate Press. ISBN 1-888118-04-0
Smith, Richard Norton (1984). An Uncommon Man: The Triumph of Herbert Hoover. Simon and Schuster. ISBN 0-671-46034-X