Drucker, P. F. (2007). People and Performance. Oxford: Butterwoth Heinemann.
Dyfyniad Arddull ChicagoDrucker, Peter F. People and Performance. New York: Oxford: Butterwoth Heinemann, 2007.
Dyfyniad MLADrucker, Peter F. People and Performance. Oxford: Butterwoth Heinemann, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.