APA (7 वां संस्करण) प्रशस्ति पत्र

Narayanan, P. (2017). Patent Law (4th.). Eastern Law House.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Narayanan, P. Patent Law. 4th. Kolkata: Eastern Law House, 2017.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Narayanan, P. Patent Law. 4th. Eastern Law House, 2017.