Lankton, L. D. (2010). Hollowed ground: Copper mining and community building on Lake Superior, 1840s-1990s. Wayne State University Press.
Lua i Stíl Chicago (17ú heag.)Lankton, Larry D. Hollowed Ground: Copper Mining and Community Building on Lake Superior, 1840s-1990s. Detroit, Mich.: Wayne State University Press, 2010.
Lua MLA (9ú heag.)Lankton, Larry D. Hollowed Ground: Copper Mining and Community Building on Lake Superior, 1840s-1990s. Wayne State University Press, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.