Dyfyniad APA

(2001). Energy efficiency: Promotion of energy efficiency in industry and financing of investments. New York: United Nations.

Dyfyniad Arddull Chicago

Energy Efficiency: Promotion of Energy Efficiency in Industry and Financing of Investments. New York: United Nations, 2001.

Dyfyniad MLA

Energy Efficiency: Promotion of Energy Efficiency in Industry and Financing of Investments. New York: United Nations, 2001.

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