APA (7th ed.) Citation

United States. Congress. Joint Special Committee to Investigate Safety of Roofs over Senate and House Wings of the Capitol & ProQuest (Firm). (1940). Strength and safety of roofs of House and Senate wings of Capitol. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Congress. Joint Special Committee to Investigate Safety of Roofs over Senate and House Wings of the Capitol and ProQuest (Firm). Strength and Safety of Roofs of House and Senate Wings of Capitol. Washington: [publisher not identified], 1940.

MLA (9th ed.) Citation

United States. Congress. Joint Special Committee to Investigate Safety of Roofs over Senate and House Wings of the Capitol and ProQuest (Firm). Strength and Safety of Roofs of House and Senate Wings of Capitol. [publisher not identified], 1940.