1. The Circumstances of Justice: Pluralism, Community, and Friendship*
2. Brennan, Andrew and Y.S. Lo. 2002. Environmental Ethics. Stanford Encyclopedia of Philosophy. http://plato.stanford.edu/entries/ethics-environmental/.
3. Callicott, J. Baird. 1999. Beyond the Land Ethic. Albany: State University of New York Press.
4. Callicott, J. Baird.1992. The Search for an Environmental Ethic. In Matters of Life and Death (pp. 322-82), ed. Tom Regan. New York: McGraw Hill.
5. Callicott, J. Baird. 1989. In Defense of the Land Ethic. Albany, NY: SUNY Press.