Kale, N. (2002). Business environment and development -S.Y.B.Com (5th.). Vipul.
Chicago-čujuhus (17. p.)Kale, N. Business Environment and Development -S.Y.B.Com. 5th. MUmbai: Vipul, 2002.
MLA-čujuhus (9. p.)Kale, N. Business Environment and Development -S.Y.B.Com. 5th. Vipul, 2002.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.