Gopalkrisgna. (2001). Principles of Intellectual Property. Oxford university Press,New Delhi.
Cita Chicago (17th ed.)Gopalkrisgna. Principles of Intellectual Property. India: Oxford university Press,New Delhi, 2001.
Cita MLA (9th ed.)Gopalkrisgna. Principles of Intellectual Property. Oxford university Press,New Delhi, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.