Lipgens, W. (1986). Documents on the History of European Integrations: Plans for European Union in Great Britain and in Exile 1939 -1945. DeGruyter.
Lua i Stíl Chicago (17ú heag.)Lipgens, Walter. Documents on the History of European Integrations: Plans for European Union in Great Britain and in Exile 1939 -1945. Berlin; New York: DeGruyter, 1986.
Lua MLA (8ú heag.)Lipgens, Walter. Documents on the History of European Integrations: Plans for European Union in Great Britain and in Exile 1939 -1945. DeGruyter, 1986.
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