Brech, E. Management its nature & significance (4th.).
Chicago-čujuhus (17. p.)Brech, E. Management Its Nature & Significance. 4th.
MLA-čujuhus (9. p.)Brech, E. Management Its Nature & Significance. 4th.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.