Drucker, P. F. (2007). People and Performance. Harvard Business School Pub.
Dyfyniad Arddull ChicagoDrucker, Peter F. People and Performance. Boston: Harvard Business School Pub, 2007.
Dyfyniad MLADrucker, Peter F. People and Performance. Harvard Business School Pub, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.