APA-čujuhus (7. p.)
Costello, S. J. (1994). Effective performance management. Jack Wilson and Associates.
Chicago-čujuhus (17. p.)
Costello, Sheila J. Effective Performance Management. Illonois, Chicago: Jack Wilson and Associates, 1994.
MLA-čujuhus (9. p.)
Costello, Sheila J. Effective Performance Management. Jack Wilson and Associates, 1994.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.