APA (7th ed.) Citation

United States. Interstate Commerce Commission. (1938). 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, Apr-June 1938. [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, Apr-June 1938. [Washington]: [s.n.], 1938.

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, Apr-June 1938. [s.n.], 1938.