Peter F.drucker. (1989). The new realities: In government and politics, in economics and business, in society and world view. Harpercollins publishers.
শিকাগো স্টাইলে সাইটেশনPeter F.drucker. The New Realities: In Government and Politics, in Economics and Business, in Society and World View. New york: Harpercollins publishers, 1989.
এমএলএ সাইটেশনPeter F.drucker. The New Realities: In Government and Politics, in Economics and Business, in Society and World View. Harpercollins publishers, 1989.
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