APA Citation

United States. Weather Bureau. Daily series synoptic weather maps, Northern Hemisphere, 100 millibar and 50 millibar charts. [Washington, D.C.: U.S. Dept. of Commerce, Weather Bureau].

Chicago Style Citation

United States. Weather Bureau. Daily Series Synoptic Weather Maps, Northern Hemisphere, 100 Millibar and 50 Millibar Charts. [Washington, D.C.: U.S. Dept. of Commerce, Weather Bureau].

MLA Citation

United States. Weather Bureau. Daily Series Synoptic Weather Maps, Northern Hemisphere, 100 Millibar and 50 Millibar Charts. [Washington, D.C.: U.S. Dept. of Commerce, Weather Bureau].

Warning: These citations may not always be 100% accurate.