四巨頭 (第一次世界大戦)
立命館大学図書館 「パリ講和会議資料データベース」
Cooper, John Milton. Breaking the Heart of the World: Woodrow Wilson and the Fight for the League of Nations (2010) excerpt and text search
Macmillan, Margaret. Paris 1919: Six Months That Changed the World (2003) excerpt and text search
Sharp, Alan (2011). Consequences of Peace: The Versailles Settlement: Aftermath and Legacy 1919–2010. Haus Publishing. ISBN 978-1905791743. https://books.google.com/books?id=v0GrPAAACAAJ
Stevenson, David (1998). “France at the Paris Peace Conference: Addressing the Dilemmas of Security”. In Robert W. D. Boyce. French Foreign and Defence Policy, 1918–1940: The Decline and Fall of a Great Power. London: Routledge. ISBN 978-0-415-15039-2