Narayanan.P. (2007). Copyright and Industrial Desings. Eastern Law House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNarayanan.P. Copyright and Industrial Desings. New Delhi: Eastern Law House, 2007.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNarayanan.P. Copyright and Industrial Desings. Eastern Law House, 2007.
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