Schlesinger, Arthur M., Jr. (1973): The Imperial Presidency, Frank and Virginia Williams Collection of Lincolniana (Mississippi State University. Libraries). Boston: Houghton Mifflin. s. x. ISBN 0395177138. OCLC 704887.
Schlesinger, Arthur M., Jr. (1973): The Imperial Presidency, Frank and Virginia Williams Collection of Lincolniana (Mississippi State University. Libraries). Boston: Houghton Mifflin. s. x. ISBN 0395177138. OCLC 704887.
archives.gov
Smith, Richard Norton; Walch, Timothy (sommeren 2004): «The Ordeal of Herbert Hoover», Prologue Magazine. National Archives. 36 (2).
Ford, Henry Jones (1908): «The Influence of State Politics in Expanding Federal Power», Proceedings of the American Political Science Association. 5: 53–63. doi:10.2307/3038511. JSTOR 3038511.
Ford, Henry Jones (1908): «The Influence of State Politics in Expanding Federal Power», Proceedings of the American Political Science Association. 5: 53–63. doi:10.2307/3038511. JSTOR 3038511.
Tian, Nan; Fleurant, Aude; Kuimova, Alexandra; Wezeman, Pieter D.; Wezeman, Siemon T. (24. april 2022): "Trends in World Military Expenditure, 2021" (PDF). Stockholm International Peace Research Institute. Arkivert fra originalen den 25. april 2022.
Tian, Nan; Fleurant, Aude; Kuimova, Alexandra; Wezeman, Pieter D.; Wezeman, Siemon T. (24. april 2022): "Trends in World Military Expenditure, 2021" (PDF). Stockholm International Peace Research Institute. Arkivert fra originalen den 25. april 2022.
Schlesinger, Arthur M., Jr. (1973): The Imperial Presidency, Frank and Virginia Williams Collection of Lincolniana (Mississippi State University. Libraries). Boston: Houghton Mifflin. s. x. ISBN 0395177138. OCLC 704887.
Schlesinger, Arthur M., Jr. (1973): The Imperial Presidency, Frank and Virginia Williams Collection of Lincolniana (Mississippi State University. Libraries). Boston: Houghton Mifflin. s. x. ISBN 0395177138. OCLC 704887.