Drucker, P. F. (2007). People and Performance. Harvard Business School Pub.
Lua i Stíl Chicago (17ú heag.)Drucker, Peter F. People and Performance. Boston: Harvard Business School Pub, 2007.
Lua MLA (9ú heag.)Drucker, Peter F. People and Performance. Harvard Business School Pub, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.