United States. Weather Bureau. Daily synoptic series, historical weather maps. U.S. Weather Bureau.
Cita Chicago Style (17a ed.)United States. Weather Bureau. Daily Synoptic Series, Historical Weather Maps. Washington, D.C.: U.S. Weather Bureau.
Cita MLA (8a ed.)United States. Weather Bureau. Daily Synoptic Series, Historical Weather Maps. U.S. Weather Bureau.
Precaución: Estas citas no son 100% exactas.