APA

United States, . (1913). Safety of travelers and employees on railroads: hearings July 10, 1912 and Feb. 4, 1913. [Washington, D.C.]: .

Chicago

United States, . 1913. Safety of travelers and employees on railroads: hearings July 10, 1912 and Feb. 4, 1913. [Washington, D.C.]: .

Harvard

United States, . (1913). Safety of travelers and employees on railroads: hearings July 10, 1912 and Feb. 4, 1913. [Washington, D.C.]: .

MLA

United States, . Safety of travelers and employees on railroads: hearings July 10, 1912 and Feb. 4, 1913. [Washington, D.C.]: . 1913.