APA (7th ed.) Citation

United States. Department of State. (1919). Belligerent countries represented during war by American diplomatic and consular officers. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Department of State. Belligerent Countries Represented During War by American Diplomatic and Consular Officers. Washington: U.S. GPO, 1919.

MLA (9th ed.) Citation

United States. Department of State. Belligerent Countries Represented During War by American Diplomatic and Consular Officers. U.S. GPO, 1919.

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