APA-referens (7:e uppl.)

Hidy, R. W. (2004). Great Northern Railway: A history (First University of Minnesota Press ed.). University of Minnesota Press.

Chicago-referens (17:e uppl.)

Hidy, Ralph W. Great Northern Railway: A History. First University of Minnesota Press ed. Minneapolis, Minn. ; London: University of Minnesota Press, 2004.

MLA-referens (9:e uppl.)

Hidy, Ralph W. Great Northern Railway: A History. First University of Minnesota Press ed. University of Minnesota Press, 2004.