APA-referens (7:e uppl.)
Williams, M. (2009). The brittle thread of life: Backcountry people make a place for themselves in early America. Yale University Press.
Chicago-referens (17:e uppl.)
Williams, Mark. The Brittle Thread of Life: Backcountry People Make a Place for Themselves in Early America. New Haven: Yale University Press, 2009.
MLA-referens (9:e uppl.)
Williams, Mark. The Brittle Thread of Life: Backcountry People Make a Place for Themselves in Early America. Yale University Press, 2009.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.