Bannock, Graham
Penguin Books, 1973
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Maurer, Herrymon, author
Macmillan, 1956
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Aritonang, Joshua Cristopher, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2020
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Krishnan, Krish, author
Elsevier Science, 2013
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White, Robert W., author
Prentice-Hall, 1996
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