Dyfyniad APA

TOFFLER, A. (1990). Powershift: Knowledge, wealth, and violence at the edgeof the 21st century. Bantam Books.

Dyfyniad Arddull Chicago

TOFFLER, Alvin. Powershift: Knowledge, Wealth, and Violence at the Edgeof the 21st Century. New York: Bantam Books, 1990.

Dyfyniad MLA

TOFFLER, Alvin. Powershift: Knowledge, Wealth, and Violence at the Edgeof the 21st Century. Bantam Books, 1990.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.