Caidin, Martin
Rendezvous in space : the history of projects mercury, gemini, dyna-soar and apollo / Martin Caidin
E.P. Dutton & Co., 1962
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Macmillan encyclopedia of sciences : The Heavens
New York : MacMillan Library Reference USA, 1997,
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Henig, Stanley
The uniting of Europe: from discord to concord / Stanley Henig
Routledge , 1997
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Thody, Philip
An historical introduction to the European Union
Routledge , 1997
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Graham, Loren R.
Science in Russia and the Soviet Union: a short history
Cambridge University Press, 1993
 Buku Teks SO