1. Attfield, Robin. Environmental Ethics: An Overview for the Twenty-First Century. Cambridge: Polity Press, 2003.
2. Bentham, Jeremy. An Introduction to the Principles of Morals and Legislation. 1789. Ed. J. H. Burns and H. L. A. Hart. London: Athlones P, 1970.
3. Blanchard, Paula. Sarah Orne Jewett: Her World and Her Work. Reading, MA: Addison-Wesley, 1994.
4. Rhetoric, Environmentalism, and Environmental Ethics
5. Buell, Lawrence. The Environmental Imagination: Thoreau, Nature Writing and the Formation of American Culture. Cambridge, MA: Harvard UP, 1995.