APA (7th ed.) Zitazioa

Uekötter, F., & Engels, J. I. (2010). The turning points of environmental history. University of Pittsburgh Press.

Chicago Style (17th ed.) Zitazioa

Uekötter, Frank, eta Jens Ivo Engels. The Turning Points of Environmental History. Pittsburgh, Pennsylvania: University of Pittsburgh Press, 2010.

MLA (9th ed.) Zitazioa

Uekötter, Frank, eta Jens Ivo Engels. The Turning Points of Environmental History. University of Pittsburgh Press, 2010.