Drucker , P. (1993). Managing for results. Harper Business.
Chicago-čujuhus (17. p.)Drucker , Peter. Managing for Results. New York: Harper Business, 1993.
MLA-čujuhus (9. p.)Drucker , Peter. Managing for Results. Harper Business, 1993.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.