1. Cafaro P, Sandler R (2005) Environmental virtue ethics. Rowman & Littlefield, Lanham
2. Callicott JB (1989) In defense of the land ethic: essays in environmental philosophy. State University Press of New York Press, Albany
3. Commoner B (1971) The closing circle. Nature, man, and technology. Bantam, New York
4. Everson W (1976) Archetype west: the Pacific coast as a literary region. Oyez Press, Berkeley
5. Farmer J (2008) The great American pantheist. Science 322(5903):859–860