From Wikipedia, the free encyclopedia
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^ De Groot, Gerard J. (2001). The First World War. Basingstoke [etc.] : Palgrave.
ISBN
0333745345.
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^ Turner, Leonard Charles Fredrick (1976). Origins of the First World War. London: Edward Arnold.
ISBN
0393099474.
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^ Stevenson, David (1988). The First World War and international politics. Oxford: University Press.
ISBN
0198730497.
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^ Bessel, Richard. (1995). Germany after the First World War. Oxford: Clarendon.
ISBN
0198205864.