2. The green halo: a bird's-eye view of ecological ethics Kohák, Erazim V. Chicago, Ill. : Open Court, c2000. GEC204 ENG406
3. Environmental philosophy: from animal rights to radical ecology Upper Saddle River, NJ : Pearson/Prentice Hall, c2005. GEC204
4. Bringing life to ethics: global bioethics for a humane society Fox, Michael W., 1937- Albany, N.Y. : State University of New York Press, c2001. GEC204
5. Confucianism and ecology: the interrelation of heaven, earth, and humans Cambridge, MA : Dist. by Harvard University Press for the Harvard University Center for the Study of World Religions, c1998. GEC204