CallicottJ. Baird1988. ‘Animal Liberation and Environmental Ethics: Back Together Again’, Between the Species4: 163–169.
2.
CallicottJ. Baird1989. In Defense of the land Ethic: Essays in Environmental Philosophy. Albany: State University of New York Press.
3.
CallicottJ. Baird1992. ‘Can a Theory of Moral Sentiments Support a Genuinely Normative Environmental Ethic?’, Inquiry35: 183–198
4.
CallicottJ. Baird1999. Beyond the Land Ethic: More Essays in Environmental Philosophy. Albany: State University of new York Press.
5.
EhrenfeldDavid1978. The Arrogance of Humanism. New York: Oxford University Press.
6.
GoodpasterK. E.1979. ‘From Egoism to Environmentalism’, in GoodpasterK. E. and SayreK. M. (eds.), Ethics & Problems of the 21st Century, pp. 21–35. Notre Dame, IN: University of Notre Dame Press.
7.
HumeDavid1957 (1751). An Inquiry Concerning the Principles of Morals.New York: The Liberal Arts Press.
8.
JamiesonDale1998. ‘Animal Liberation is an Environmental Ethic’, Environmental Values7:41–57.
9.
JohnsonLawrence E.1991. A Morally Deep World: An Essay on Moral Significance and Environmental Ethics. Cambridge: Cambridge University Press.
10.
LeopoldAldo1949. A Sand Countay Almanac. New York: Oxford University Press.
11.
MidgleyMary1983. Animals and Why They Matter. Athens: The University of Georgia Press.
12.
NortonBryan G.1991. Toward Unity Among Environmentalists. New York: Oxford University Press.
13.
PassmoreJohn1974. Man's Responsibility for Nature. New York: Charles Scribner's Sons.
14.
ReganTom1979. “An Examination and Defense of One Argument Concerning Animal Rights,” Inquiry22: 189–219.
15.
ReganTom1983. The Case for Animal Rights. Berkeley: University of California Press.
16.
RolstonHolmesIII.1988. Environmental Ethics: Duties to and Values in the Natural World. Philadelphia: Temple University Press.
17.
Shrader-FrechetteK. S.1981. Environmental Ethics. Pacific Grove, CA: Boxwood Press.
18.
SingerPeter1982. The Expanding Circle: Ethics and Sociobiology. New York: Ferrar, Strauss, and Giroux.
19.
TaylorPaul W.1986. Respect for Nature: A Theory of Environmental Ethics. Princeton, NJ: Princeton University Press.
20.
VarnerG. E.1995. ‘Can Animal Rights Activists Be Environmentalists?’, in ChristinePierce and DonaldVanDeVeer (eds.), People, Penguins, and Plastic Trees, second edition, pp. 254–273. Belmont, CA: Wadsworth.
21.
VarnerG.E.1996. ‘No Holism Without Pluralism’, Environmental Ethics19: 175–179.
22.
WarrenMary Ann. 1983. ‘The Rights of the Nonhuman World’ in RobertElliot and ArranGare, Environmental Philosophy: A Collection of Readings. University Park: The Pennsylvania State University Press.