Mulligan, W. (2017). The origins of the first world war (Second edition.). Cambridge University Press.
Chicago-viite (17. p.)Mulligan, William. The Origins of the First World War. Second edition. Cambridge, United Kingdom ; New York, NY: Cambridge University Press, 2017.
MLA-viite (8. p.)Mulligan, William. The Origins of the First World War. Second edition. Cambridge University Press, 2017.
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