APA (7th ed.) Citation

United States. Interstate Commerce Commission. (1939). Freight Commodity Statistics, Class I Steam Railways in the United States, Year Ended December 31, 1938. [s.n.].

Chicago Style (17th ed.) Citation

United States. Interstate Commerce Commission. Freight Commodity Statistics, Class I Steam Railways in the United States, Year Ended December 31, 1938. [Washington]: [s.n.], 1939.

MLA (9th ed.) Citation

United States. Interstate Commerce Commission. Freight Commodity Statistics, Class I Steam Railways in the United States, Year Ended December 31, 1938. [s.n.], 1939.