Hidy, R. W. (2004). Great Northern Railway: A history (First University of Minnesota Press ed.). University of Minnesota Press.
Dyfyniad Arddull ChicagoHidy, Ralph W. Great Northern Railway: A History. First University of Minnesota Press ed. Minneapolis, Minn. ; London: University of Minnesota Press, 2004.
Dyfyniad MLAHidy, Ralph W. Great Northern Railway: A History. First University of Minnesota Press ed. University of Minnesota Press, 2004.
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