Sibley, J.F., author
Online patents trade marks and service marks database
Aslib, 1991
 Buku Referensi
White, A. Blanco
Patents, trade marks, coptrightand industrial design / A. Blanco White and Robin Jacob
Sweet and Maxwell, 1970
 Buku Teks
Cornish, W.R. (William Rodolph), 1937-, author
Intellectual property : patents, copyright, trade marks and allied rights
Sweet and Maxwell, 2007
 Buku Referensi
Meinhardt, Peter, author
Inventions patens and trade marks
Gower Press, 1971
 Buku Teks
Goh, Tianwah, author
The trade marks law : the law and rules of trade marks in Singapore
Rank Books, 1991
 Buku Teks
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