Drucker, P. F. (2007). People and Performance. Oxford: Butterwoth Heinemann.
Lua i Stíl Chicago (17ú heag.)Drucker, Peter F. People and Performance. New York: Oxford: Butterwoth Heinemann, 2007.
Lua MLA (9ú heag.)Drucker, Peter F. People and Performance. Oxford: Butterwoth Heinemann, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.