Drucker, P. F. (1977). People and performance: The best of Peter Drucker on management. Harper's College Press.
Lua i Stíl Chicago (17ú heag.)Drucker, Peter Ferdinand. People and Performance: The Best of Peter Drucker on Management. New York: Harper's College Press, 1977.
Lua MLA (9ú heag.)Drucker, Peter Ferdinand. People and Performance: The Best of Peter Drucker on Management. Harper's College Press, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.