APA (7th ed.) Citation

United States. Army Map Service. (1942). Sierra Leone, Africa, 1: 250,000.

Chicago Style (17th ed.) Citation

United States. Army Map Service. Sierra Leone, Africa, 1: 250,000. Washington, 1942.

MLA (8th ed.) Citation

United States. Army Map Service. Sierra Leone, Africa, 1: 250,000. 1942.

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