Witzel. History Of Management Thought. routledg.
Chicago-čujuhus (17. p.)Witzel. History Of Management Thought. routledg.
MLA-čujuhus (9. p.)Witzel. History Of Management Thought. routledg.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.