Singh Avtar. (1999). Introduction to law of Contract (3.). Eastern Book company.
Lua i Stíl Chicago (17ú heag.)Singh Avtar. Introduction to Law of Contract. 3. Lucknow: Eastern Book company, 1999.
Lua MLA (9ú heag.)Singh Avtar. Introduction to Law of Contract. 3. Eastern Book company, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.