APA (7th ed.) Citation

United States. Army Map Service. (1944). Philippine Islands 1: 500,000. U.S. Army Map Service.

Chicago Style (17th ed.) Citation

United States. Army Map Service. Philippine Islands 1: 500,000. Washington, D.C.: U.S. Army Map Service, 1944.

MLA (8th ed.) Citation

United States. Army Map Service. Philippine Islands 1: 500,000. U.S. Army Map Service, 1944.

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