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Albert Ballin : business and politics in Imperial Germany, 1888 - 1918
Cecil, Lamar, (1967)
Was kann Deutschland an Lasten tragen?
Dräger, Heinrich, (1955)
Deutsche Wirtschaftspropaganda im Weltkrieg
Wiehler, Rudolf, (1922)
Monopoly and Competition, A Study in English Industrial Organisation
Levy, Hermann,
Industrial Germany, A Study of its Monopoly Organisations and their Control by the State
Vorratswirtschaft und Volkswirtschaft
Levy, Hermann, (1915)