Toffler, A. Powershift: Knowledge, wealth, and violence at the edge of the 21st century. New York: Bantam Books.

Toffler, Alvin. Powershift: Knowledge, Wealth, and Violence At the Edge of the 21st Century. New York: Bantam Books.

Toffler, Alvin. Powershift: Knowledge, Wealth, and Violence At the Edge of the 21st Century. New York: Bantam Books.