Iyer, U. (2005). A textbook in business economics F.Y.B.Com (6th.). Ashwarya Publication.
Lua i Stíl Chicago (17ú heag.)Iyer, Usha. A Textbook in Business Economics F.Y.B.Com. 6th. Mumbai: Ashwarya Publication, 2005.
Lua MLA (9ú heag.)Iyer, Usha. A Textbook in Business Economics F.Y.B.Com. 6th. Ashwarya Publication, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.