Hudelson, R., & Ross, C. (2006). By the ore docks: A working people's history of Duluth. University of Minnesota Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHudelson, Richard, और Carl Ross. By the Ore Docks: A Working People's History of Duluth. Minneapolis: University of Minnesota Press, 2006.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHudelson, Richard, और Carl Ross. By the Ore Docks: A Working People's History of Duluth. University of Minnesota Press, 2006.
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