Singh, A. (1999). Introduction to the law of contract (Third edition.). Eastern Book Co..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSingh, Avtar. Introduction to the Law of Contract. Third edition. Lucknow: Eastern Book Co., 1999.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSingh, Avtar. Introduction to the Law of Contract. Third edition. Eastern Book Co., 1999.
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