危機の二十年
The twenty years' crisis, 1919-1939: an introduction to the study of international relations, London: Macmillan, 1939.
The twenty years' crisis, 1919-1939: an introduction to the study of international relations, 2nd ed., London: Macmillan, 1946.
The twenty years' crisis, 1919-1939: an introduction to the study of international relations, reissued with a new introduction and additional material by Michael Cox, Basingstoke: Palgrave, 2001.