APA
Singh A., . (19802009). Law of contract. Delhi # Lucknow: Eastern Book Company.
Chicago
Singh Avtar, . 19802009. Law of contract. Delhi # Lucknow: Eastern Book Company.
Harvard
Singh A., . (19802009). Law of contract. Delhi # Lucknow: Eastern Book Company.
MLA
Singh Avtar, . Law of contract. Delhi # Lucknow: Eastern Book Company. 19802009.