APA引文

Singh , A. (1989). Law of contract (5.). Eastern Book company.

芝加哥风格引文

Singh , Avtar. Law of Contract. 5. Lucknow: Eastern Book company, 1989.

MLA引文

Singh , Avtar. Law of Contract. 5. Eastern Book company, 1989.

警告：这些引文格式不一定是100％准确.