Drucker, P. F. (1942). The future of industrial man: A conservative approach. Connecticut: Greenwood Press.
Dyfyniad Arddull ChicagoDrucker, Peter Ferdinand. The Future of Industrial Man: A Conservative Approach. Connecticut: Greenwood Press, 1942.
Dyfyniad MLADrucker, Peter Ferdinand. The Future of Industrial Man: A Conservative Approach. Connecticut: Greenwood Press, 1942.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.