APA (7th ed.) Citation

(1923). Flags at half staff on all public buildings in U.S. [publisher not identified].

Chicago Style (17th ed.) Citation

Flags at Half Staff on All Public Buildings in U.S. [Washington]: [publisher not identified], 1923.

MLA (9th ed.) Citation

Flags at Half Staff on All Public Buildings in U.S. [publisher not identified], 1923.