Sashkin, M. (1981). Assessing performance appraisal. University asociated.
Lua i Stíl Chicago (17ú heag.)Sashkin, Marshall. Assessing Performance Appraisal. University asociated, 1981.
Lua MLA (8ú heag.)Sashkin, Marshall. Assessing Performance Appraisal. University asociated, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.