Wolff, Robert Lee
The Balkans in our time / by Robert Lee Wolff
Harvard University Press, 1956
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Parker, R.A.C.
Europe 1919-45 / R. A. C. Parker
Weidenfeld and Nicolson, 1969
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Riker, T.W.
The making of Roumania : a study of an international problem, 1856-1866 / T.W. Riker
Oxford University Press , 1931
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Childs, Harwood Lawrence
Propaganda and dictactorship
Princeton University Prees, 1936
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Sontag, Raymond James
European diplomatic history 1871-1932
Crofts, 1933.
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