Dyfyniad APA

ebrary, Inc. (1991). A Safer future: Reducing the impacts of natural disasters. National Academy Press.

Dyfyniad Arddull Chicago

ebrary, Inc. A Safer Future: Reducing the Impacts of Natural Disasters. Washington, D.C.: National Academy Press, 1991.

Dyfyniad MLA

ebrary, Inc. A Safer Future: Reducing the Impacts of Natural Disasters. National Academy Press, 1991.

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