Gupta, R. R. (1980). Income - Tax Law and Practice. Agra Book Store.
Lua i Stíl Chicago (17ú heag.)Gupta, Rup Ram. Income - Tax Law and Practice. Agra: Agra Book Store, 1980.
Lua MLA (9ú heag.)Gupta, Rup Ram. Income - Tax Law and Practice. Agra Book Store, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.