Williams, R. (2003). Managing employee performance. Thomson Asia.
Chicago-čujuhus (17. p.)Williams, Richard. Managing Employee Performance. Singapore: Thomson Asia, 2003.
MLA-čujuhus (9. p.)Williams, Richard. Managing Employee Performance. Thomson Asia, 2003.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.