Parkinson, Claire L.
Breakthroughs : a cronology of great achievements in science and mathematics 1200-1930
G.K. Hall, 1984
 Buku Teks
Toynbee, Arnold J.
Civilization on trial
Oxford University Press, 1948
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Wallbank, T. Walter
Civilization, past and present
Scott, Foresman, 1965
 Buku Teks
Wallbank, T. Walter
Civilization : past and present
Scott, Foresman, 1967
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Armstrong, James W.
Elements of mathematics
Macmillan, 1976
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