APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (8:e uppl.)

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