Singh, A. (1983). An introduction to the law of contract (2nd ed.). Eastern Book Company.
Lua i Stíl Chicago (17ú heag.)Singh, Avtar. An Introduction to the Law of Contract. 2nd ed. Lucknow: Eastern Book Company, 1983.
Lua MLA (8ú heag.)Singh, Avtar. An Introduction to the Law of Contract. 2nd ed. Eastern Book Company, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.