Dyfyniad APA

United Nations. Economic Commission for Europe. (1993). Solar Power Systems. United Nations.

Dyfyniad Arddull Chicago

United Nations. Economic Commission for Europe. Solar Power Systems. New York: United Nations, 1993.

Dyfyniad MLA

United Nations. Economic Commission for Europe. Solar Power Systems. United Nations, 1993.

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