Gopalakrishnan, N. S. (2009). Principles of Intellectual Property. Eastern Book Company.
Čikaški stil citiranjaGopalakrishnan, N S. Principles of Intellectual Property. Lucknow: Eastern Book Company, 2009.
MLA način citiranjaGopalakrishnan, N S. Principles of Intellectual Property. Eastern Book Company, 2009.
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