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J. William Fulbright (May 1948), "A United States of Europe?", The Annals of the American Academy of Political and Social Science, 257 (257, Peace Settlements of World War II), Sage Publications, Inc. in association with the American Academy of Political and Social Science: 151–156, doi:10.1177/000271624825700116, JSTOR1026642, S2CID145490100
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J. William Fulbright (May 1948), "A United States of Europe?", The Annals of the American Academy of Political and Social Science, 257 (257, Peace Settlements of World War II), Sage Publications, Inc. in association with the American Academy of Political and Social Science: 151–156, doi:10.1177/000271624825700116, JSTOR1026642, S2CID145490100
Bruno Waterfield in Brussels (18 February 2009). "Blueprint for EU army to be agreed". Telegraph.co.uk. Archived from the original on 12 January 2022. Retrieved 30 December 2014.
Kelemen, R Daniel (September 2005). "Built to Last? The durability of EU federalism"(PDF). In Meunier, Sophie; McNamara, Kate (eds.). Making History: State of the European Union. Vol. 8. (University of Oxford). Oxford University Press. p. 52. Archived from the original(PDF) on 20 January 2013.