Erhard, N. (2007). Moral habitat: Ethos and agency for the sake of earth. State University of New York Press.
Lua i Stíl Chicago (17ú heag.)Erhard, Nancie. Moral Habitat: Ethos and Agency for the Sake of Earth. Albany: State University of New York Press, 2007.
Lua MLA (9ú heag.)Erhard, Nancie. Moral Habitat: Ethos and Agency for the Sake of Earth. State University of New York Press, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.