APA (7th ed.) Citation

United States. Interstate Commerce Commission. (1939). Passenger Traffic Statistics (Other than Commutation) of Class I Steam Railways in the United States, Separated Between Coach Traffic and Parlor and Sleeping Car Traffic, Oct-Dec. 1939. [s.n.].

Chicago Style (17th ed.) Citation

United States. Interstate Commerce Commission. Passenger Traffic Statistics (Other than Commutation) of Class I Steam Railways in the United States, Separated Between Coach Traffic and Parlor and Sleeping Car Traffic, Oct-Dec. 1939. [Washington]: [s.n.], 1939.

MLA (9th ed.) Citation

United States. Interstate Commerce Commission. Passenger Traffic Statistics (Other than Commutation) of Class I Steam Railways in the United States, Separated Between Coach Traffic and Parlor and Sleeping Car Traffic, Oct-Dec. 1939. [s.n.], 1939.