Cokins, G. (2009). Performance Management. John Wiley & Co.
Lua i Stíl Chicago (17ú heag.)Cokins, Gary. Performance Management. John Wiley & Co, 2009.
Lua MLA (9ú heag.)Cokins, Gary. Performance Management. John Wiley & Co, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.