United States. Interstate Commerce Commission. (1938). Selected income and balance-sheet items of Class I steam railways in U.S., Apr. 1938. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Interstate Commerce Commission. Selected Income and Balance-sheet Items of Class I Steam Railways in U.S., Apr. 1938. [Washington]: [s.n.], 1938.
MLA (9th ed.) CitationUnited States. Interstate Commerce Commission. Selected Income and Balance-sheet Items of Class I Steam Railways in U.S., Apr. 1938. [s.n.], 1938.
Warning: These citations may not always be 100% accurate.