APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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