APA (7th ed.) Citation

United States. Army Map Service. (1943). Philippine Islands 1: 500,000. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Army Map Service. Philippine Islands 1: 500,000. Washington: [publisher not identified], 1943.

MLA (9th ed.) Citation

United States. Army Map Service. Philippine Islands 1: 500,000. [publisher not identified], 1943.

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