Keylor, William R., 1944-
The twentieth-century world : an international history
Oxford University Press, 1996
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Grenville, J.A.S.
A history of the world : from the 20th to the 21st century
Routledge, 2005
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Tuchman, Barbara W.
The proud tower : a portrait of the world before the war 1890-1914
Macmillan, 1965
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The statesman's year-book: stastistical and historical annual of the states of the world for the year 1992-1993
edited by Brian Hunter
Macmillan, 1992
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The statesman's year-book: stastistical and historical annual of the states of the world for the year 1991-1992
edited by Brian Hunter
Macmillan, 1991
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