Toffler, A. Powershift: Knowledge, wealth, and violence at the edge of the 21st century. New York: Bantam Books.
Παραπομπή Chicago StyleToffler, Alvin. Powershift: Knowledge, Wealth, and Violence At the Edge of the 21st Century. New York: Bantam Books.
Παραπομπή MLAToffler, Alvin. Powershift: Knowledge, Wealth, and Violence At the Edge of the 21st Century. New York: Bantam Books.
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