Beattie, C. N.
The elements of income tax law
Stevens & Sons Lim. , 1957
 Buku Teks
Innovation and the intellectual property system
edited by Andrew Webster and Kathryn Packer
Kluwer Law International, 1996
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Colston, Catherine
Principles of intelectual property law
Cavendish Publishing, 1999
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Megarry, Robert
The law of real property
Stevens and Sons, 1975.
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Henkow, Oskar
The VAT/​GST treatment of public bodies
The Netherlands Wolters Kluwer Law Business, 2013
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