APA (7 वां संस्करण) प्रशस्ति पत्र

Singh, A. (2018). Business law: Principles of mercantile law (Eleventh edition.). Eastern Book Co..

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Singh, Avtar. Business Law: Principles of Mercantile Law. Eleventh edition. Lucknow: Eastern Book Co., 2018.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Singh, Avtar. Business Law: Principles of Mercantile Law. Eleventh edition. Eastern Book Co., 2018.