Dyfyniad APA

United States. Weather Bureau & United States. Joint Meteorological Committee. Daily synoptic series, historical weather maps. U.S. Weather Bureau.

Dyfyniad Arddull Chicago

United States. Weather Bureau and United States. Joint Meteorological Committee. Daily Synoptic Series, Historical Weather Maps. Washington, D.C.: U.S. Weather Bureau.

Dyfyniad MLA

United States. Weather Bureau and United States. Joint Meteorological Committee. Daily Synoptic Series, Historical Weather Maps. U.S. Weather Bureau.

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