Dyfyniad APA
ebrary, Inc. (1992). The Economic consequences of a catastrophic earthquake: Proceedings of a forum, August 1 and 2, 1990. National Academy Press.
Dyfyniad Arddull Chicago
ebrary, Inc. The Economic Consequences of a Catastrophic Earthquake: Proceedings of a Forum, August 1 and 2, 1990. Washington, D.C.: National Academy Press, 1992.
Dyfyniad MLA
ebrary, Inc. The Economic Consequences of a Catastrophic Earthquake: Proceedings of a Forum, August 1 and 2, 1990. National Academy Press, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.