APA (7th ed.) Citation

United States. Army Map Service. (1943). World outline map 1: 19,000,000 (approximate). Army Map Service.

Chicago Style (17th ed.) Citation

United States. Army Map Service. World Outline Map 1: 19,000,000 (approximate). Washington: Army Map Service, 1943.

MLA (8th ed.) Citation

United States. Army Map Service. World Outline Map 1: 19,000,000 (approximate). Army Map Service, 1943.

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