6Bernardin,H. J. ,Hangan,C. M. ,Kane,J. S. & Villanova,P. ,In Performance Appraisal:State of the Art in Practice ,Simither ,J. W. editor ,San Francisco: Jossey-Bass Publishers, 1998.
7Cardy, R. L. , & Dobbins, G. H. , Performance appraisal: Alternative perspectives, Cincinnati, OH: SouthWestern Publishing Co. ,1994.
8Bernardin,H. J. , ‘Behavioral expectation scales versus summated scales:A fairer comparison' ,Journal of Applied Psychology, 1977 (62): 422- 427.
9Landy ,F. J. & Farr ,J. L. , ‘Performance ratings' ,Psychological Bulletin, 1980 (87): 72 - 107.
10Pulakos,E. D. , ‘The development of training programs to increased accuracy in different rating tasks',Organizational Behavior and Human Decision Processes, 1986 (38): 76 - 91.