APA-referens (7:e uppl.)
Harwood, H. H. (2010). The railroad that never was: Vanderbilt, Morgan, and the South Pennsylvania Railroad. Indiana University Press.
Chicago-referens (17:e uppl.)
Harwood, Herbert H. The Railroad That Never Was: Vanderbilt, Morgan, and the South Pennsylvania Railroad. Bloomington: Indiana University Press, 2010.
MLA-referens (9:e uppl.)
Harwood, Herbert H. The Railroad That Never Was: Vanderbilt, Morgan, and the South Pennsylvania Railroad. Indiana University Press, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.