Peter F.drucker. (1989). The new realities: In government and politics, in economics and business, in society and world view. Harpercollins publishers.
Dyfyniad Arddull ChicagoPeter F.drucker. The New Realities: In Government and Politics, in Economics and Business, in Society and World View. New york: Harpercollins publishers, 1989.
Dyfyniad MLAPeter F.drucker. The New Realities: In Government and Politics, in Economics and Business, in Society and World View. Harpercollins publishers, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.