Barla, C. (2000). Managerial economics. National.
Chicago-čujuhus (17. p.)Barla, C. Managerial Economics. Jaipur: National, 2000.
MLA-čujuhus (9. p.)Barla, C. Managerial Economics. National, 2000.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.