Watt, D.C.
A History of the world in the 20th century; Part 1: 1899-1918
Pan Books, 1967
 Buku Teks SO
The Cambridge world history. Volume 6, The construction of a global world, 1400-1800CE. Part 1, Foundations
Cambridge University Press, 2015
 Buku Teks SO
Sixth report on the world health situation 1973-1977. part 1, 2: Global analysis
World Health Organization, 1980
 Buku Teks SO
Sears, Francis Weston, 1898-1975
University physics, part 1
Addison-Wesley , 1982
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Carlson, Arthur E.
College accounting part 1
South-Western Publishing , 1982
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