United States. Interstate Commerce Commission. (1923). Report of Chief of Section of Signals and Train Control of Bureau of Safety, Interstate Commerce Commission, upon tests of automatic train control system of Sprague Safety Control and Signal Corporation in electric zone, New York Central Lines. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Interstate Commerce Commission. Report of Chief of Section of Signals and Train Control of Bureau of Safety, Interstate Commerce Commission, upon Tests of Automatic Train Control System of Sprague Safety Control and Signal Corporation in Electric Zone, New York Central Lines. Washington: U.S. GPO, 1923.
MLA (9th ed.) CitationUnited States. Interstate Commerce Commission. Report of Chief of Section of Signals and Train Control of Bureau of Safety, Interstate Commerce Commission, upon Tests of Automatic Train Control System of Sprague Safety Control and Signal Corporation in Electric Zone, New York Central Lines. U.S. GPO, 1923.