APA (7th ed.) Citation

United States. Aeronautical Chart Service. (1947). Annual precipitation chart: Northern Hemisphere (Advance edition.). U.S. Army Air Forces.

Chicago Style (17th ed.) Citation

United States. Aeronautical Chart Service. Annual Precipitation Chart: Northern Hemisphere. Advance edition. [Washington, D.C.]: U.S. Army Air Forces, 1947.

MLA (9th ed.) Citation

United States. Aeronautical Chart Service. Annual Precipitation Chart: Northern Hemisphere. Advance edition. U.S. Army Air Forces, 1947.