Political and Economic Planning & Palmer, M. (1968). European unity: A survey of the European organisations ([Rev. ed.].). Political and Economic Planning, Allen & Unwin.
Lua i Stíl Chicago (17ú heag.)Political and Economic Planning agus Michael Palmer. European Unity: A Survey of the European Organisations. [Rev. ed.]. London: Political and Economic Planning, Allen & Unwin, 1968.
Lua MLA (9ú heag.)Political and Economic Planning agus Michael Palmer. European Unity: A Survey of the European Organisations. [Rev. ed.]. Political and Economic Planning, Allen & Unwin, 1968.
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