TOFFLER, A. (1990). Powershift: Knowledge, wealth, and violence at the edgeof the 21st century. Bantam Books.
Lua i Stíl Chicago (17ú heag.)TOFFLER, Alvin. Powershift: Knowledge, Wealth, and Violence at the Edgeof the 21st Century. New York: Bantam Books, 1990.
Lua MLA (9ú heag.)TOFFLER, Alvin. Powershift: Knowledge, Wealth, and Violence at the Edgeof the 21st Century. Bantam Books, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.