Isaac Asimov
Archie W. Culp
John Twidell
Thomas L. Friedman
Vaclav Smil
Paul Pearsall
United States. General Accounting Office
United States. Congress. Senate. Special Committee To Study and Survey Problems of American Small Business Enterprises.
Judith Orloff
Unknown Author
Darlene R. Stille
Thomas Piketty
Cox
International Energy Agency
United States. General Accounting Office. Accounting and Information Management Division
United States. Office of Electric Power Regulation.
Roger Messenger
Keith A. Williams
Macmillan/McGraw-Hill School Publishing Company