APA (7th ed.) Citation

Flint, H. M. (1976). The railroads of the United States: Their history and statistics. Arno Press.

Chicago Style (17th ed.) Citation

Flint, Henry M. The Railroads of the United States: Their History and Statistics. New York: Arno Press, 1976.

MLA (9th ed.) Citation

Flint, Henry M. The Railroads of the United States: Their History and Statistics. Arno Press, 1976.