Hudelson, R., & Ross, C. (2006). By the ore docks: A working people's history of Duluth. University of Minnesota Press.
Chicago-referens (17:e uppl.)Hudelson, Richard, och Carl Ross. By the Ore Docks: A Working People's History of Duluth. Minneapolis: University of Minnesota Press, 2006.
MLA-referens (9:e uppl.)Hudelson, Richard, och Carl Ross. By the Ore Docks: A Working People's History of Duluth. University of Minnesota Press, 2006.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.