APA (7th ed.) Citation

United States. Army Map Service. (1950). Panama 1: 50,000. The Service.

Chicago Style (17th ed.) Citation

United States. Army Map Service. Panama 1: 50,000. [Washington, D.C.]: The Service, 1950.

MLA (8th ed.) Citation

United States. Army Map Service. Panama 1: 50,000. The Service, 1950.

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