Dyfyniad APA

(1991). Energy For Building United Nations Centre For Human Settlements. Habitat.

Dyfyniad Arddull Chicago

Energy For Building United Nations Centre For Human Settlements. Habitat, 1991.

Dyfyniad MLA

Energy For Building United Nations Centre For Human Settlements. Habitat, 1991.

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