APA (7e ed.) Bronvermelding

United States. Weather Bureau. Daily synoptic series, historical weather maps. U.S. Weather Bureau.

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

United States. Weather Bureau. Daily Synoptic Series, Historical Weather Maps. U.S. Weather Bureau.

Let op: Deze citaties zijn niet altijd 100% accuraat.