APA (7th ed.) Citation

United States. President (1913-1921 : Wilson). Proclamation of state of war.

Chicago Style (17th ed.) Citation

United States. President (1913-1921 : Wilson). Proclamation of State of War.

MLA (9th ed.) Citation

United States. President (1913-1921 : Wilson). Proclamation of State of War.

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