APA-referens (7:e uppl.)
Preston, C. J. (2003). Grounding knowledge: Environmental philosophy, epistemology, and place. University of Georgia Press.
Chicago-referens (17:e uppl.)
Preston, Christopher J. Grounding Knowledge: Environmental Philosophy, Epistemology, and Place. Athens: University of Georgia Press, 2003.
MLA-referens (9:e uppl.)
Preston, Christopher J. Grounding Knowledge: Environmental Philosophy, Epistemology, and Place. University of Georgia Press, 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.