APA (7th ed.) Zitazioa
Paul, S. (1992). For love of the world: Essays on nature writers. University of Iowa Press.
Chicago Style (17th ed.) Zitazioa
Paul, Sherman. For Love of the World: Essays on Nature Writers. Iowa City: University of Iowa Press, 1992.
MLA (9th ed.) Zitazioa
Paul, Sherman. For Love of the World: Essays on Nature Writers. University of Iowa Press, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.