Harold Koontz. Essentials of Managment 11th Ed. Tata McGraw Hill.
Chicago-čujuhus (17. p.)Harold Koontz. Essentials of Managment 11th Ed. Tata McGraw Hill.
MLA-čujuhus (9. p.)Harold Koontz. Essentials of Managment 11th Ed. Tata McGraw Hill.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.