Iyer, U. (2005). A Textbook in business economics (6th.). Ashwarya Pub.
Chicago-čujuhus (17. p.)Iyer, Usha. A Textbook in Business Economics. 6th. Mumbai: Ashwarya Pub, 2005.
MLA-čujuhus (9. p.)Iyer, Usha. A Textbook in Business Economics. 6th. Ashwarya Pub, 2005.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.