Kakkar, G. (2008). Performance appraisal system: New challenges. RBSA.
Chicago-čujuhus (17. p.)Kakkar, Gurudutt. Performance Appraisal System: New Challenges. Jaipur: RBSA, 2008.
MLA-čujuhus (9. p.)Kakkar, Gurudutt. Performance Appraisal System: New Challenges. RBSA, 2008.
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