APA (7th ed.) Citation

Walker, A. H. (1912). President Taft and the railroads: A historical sketch. [publisher not identified].

Chicago Style (17th ed.) Citation

Walker, Albert H. President Taft and the Railroads: A Historical Sketch. [New York, New York]: [publisher not identified], 1912.

MLA (9th ed.) Citation

Walker, Albert H. President Taft and the Railroads: A Historical Sketch. [publisher not identified], 1912.