Umadevi, S. (1989). Approaches to economic analysis. Kairali Books Intrer.
Chicago-čujuhus (17. p.)Umadevi, S. Approaches to Economic Analysis. Trivandrum: Kairali Books Intrer, 1989.
MLA-čujuhus (9. p.)Umadevi, S. Approaches to Economic Analysis. Kairali Books Intrer, 1989.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.