Citazione Stile APA (7a Edizione)

Mittlefehldt, S., & Cronon, W. (2013). Tangled roots: The Appalachian Trail and American environmental politics. University of Washington Press.

Citazione stile Chigago Style (17a edizione)

Mittlefehldt, Sarah, e William Cronon. Tangled Roots: The Appalachian Trail and American Environmental Politics. Seattle: University of Washington Press, 2013.

Citatione MLA (9a ed.)

Mittlefehldt, Sarah, e William Cronon. Tangled Roots: The Appalachian Trail and American Environmental Politics. University of Washington Press, 2013.