1. Allender, L. (2000). Modeling human performance: Impacting system design, performance and cost. Retrieved May 11, 2010, from http://www.arl.army.mil/www/DownloadedInternetPages/Astc2000-Allender.pdf
2. Armstrong, M. (2006). Handbook of human resource management practice (10th ed.). London, UK: Kogan Page. Retrieved May 25, 2010, from http://site.ebrary.com.libproxy.canton.edu:2048/lib/canton
3. A FIELD STUDY OF THE RELATIONSHIP BETWEEN THE ORGANIZATIONAL FEEDBACK ENVIRONMENT AND PERFORMANCE
4. Bernardin, J., & Klatt, L. (1985). Managerial appraisal systems: Practice has caught up with the state of the art. Public Personnel Administrator, 79-86.