Singh, A. (1999). Introduction to the law of contract (Third edition.). Eastern Book Co..
芝加哥风格引文Singh, Avtar. Introduction to the Law of Contract. Third edition. Lucknow: Eastern Book Co., 1999.
MLA引文Singh, Avtar. Introduction to the Law of Contract. Third edition. Eastern Book Co., 1999.
警告：这些引文格式不一定是100％准确.