Rae, John B.
Mc Graw-Hill Book Company, 1949
Buku Teks
Risjord, Norman K., author
Prentice-Hall, 1985
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Fairbank, John K. (John King), author
Harvard University Press, 1979
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Zinn, Howard, author
HarperCollins Publishers, 2005
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Rand McNally and Company.
Rand Mcnally & Company, 2006
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