APA (7th ed.) Zitazioa

Bormann, F. H., & Kellert, S. R. (1991). Ecology, economics, ethics: The broken circle. Yale University Press.

Chicago Style (17th ed.) Zitazioa

Bormann, F. Herbert, eta Stephen R. Kellert. Ecology, Economics, Ethics: The Broken Circle. New Haven: Yale University Press, 1991.

MLA (9th ed.) Zitazioa

Bormann, F. Herbert, eta Stephen R. Kellert. Ecology, Economics, Ethics: The Broken Circle. Yale University Press, 1991.