APA-referens (7:e uppl.)

Poor, H. V. (1860). History of the railroads and canals of the United States. J. H. Schultz.

Chicago-referens (17:e uppl.)

Poor, Henry Varnum. History of the Railroads and Canals of the United States. New York: J. H. Schultz, 1860.

MLA-referens (8:e uppl.)

Poor, Henry Varnum. History of the Railroads and Canals of the United States. J. H. Schultz, 1860.