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Kluwer Law International, 2007
Buku Teks
Heldeweg, Michiel A
Wolters Kluwer Law & Business, 2012
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Thomas, R.L.
Kluwer law and Taxation Publishers, 1988
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Taylor, Benjamin J.
Prentice-Hall, 1987
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The Southwestern Legal Foundation
Matthew Bender, 1975
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