1900-1969

• Leopold, Aldo. “The Land Ethic.” In A Sand County Almanac and Sketches Here and There, 201-226. Oxford: Oxford University Press, 1949.
• White, Lynn Jr. “The Historical Roots of Our Ecologic Crisis.” Science 155, no. 3767 (1967): 1203 – 1207.
• Hardin, Garrett. “The Tragedy of the Commons.” Science, New Series 162, no. 3859 (December 1968): 1243-1248.

1970-1979

• Stone, Christopher D. “Should Trees Have Standing?–Towards Legal Rights for Natural Objects.” Southern California Law Review 45 (1972): 450-501.
• Naess, Arne. “The Shallow and the Deep, Long-Range Ecology Movement. A Summary.” Inquiry: An Interdisciplinary Journal of Philosophy 16, no. 1-4 (1973).
• Routley, Richard. “Is There a Need for a New, an Environmental, Ethic?” Proceedings of the XVth World Congress of Philosophy 17th to 22nd September, 1973, Varna, Bulgaria. Varna, Bulgaria: Sofia Press, 1973. 205-210.
• Feinberg, Joel. “The Rights of Animals and Unborn  Generations.” In Philosophy & Environmental Crisis, by William T. Blackstone (ed.), 43-68. Athens, GA: University of Georgia Press, 1974.
• Singer, Peter. “All Animals are Equal.” Philosophical Exchange 1, no. 5 (summer 1974): 103-116.
• Rolston III, Holmes. “Is There an Ecological Ethic?” Ethics 85, no. 2 (1975): 93-109.
• Nash, Roderick. “The Value of Wilderness.” Environmental Review 1, no. 3 (1976): 12-25.
• Naess, Arne. “Spinoza and Ecology.” Philosophia 7, no. 1 (March 1977): 45-54.
• Goodpaster, Kenneth E. “On Being Morally Considerable.” The Journal of Philosophy 75, no. 6 (June 1978): 308-325.
• Carlson, Allen. “Appreciation and the Natural Environment.” Journal of Aesthetics and Art Criticism 37, no. 3 (spring 1979): 267-275.
• Rolston III, Holmes. “Can and Ought We Follow Nature?” Environmental Ethics 1, no. 1 (spring 1979): 7-30.
• Routley, Richard and Val. “Against the Inevitability of Human Chauvinism.” In Ethics and the Problems of the 21st Century, by K.E. Goodpaster and K.M Sayre (eds.), 36-59. South Bend, IN: Notre Dame University Press, 1979.

1980-1989

• Devall, Bill. “The Deep Ecology Movement.” The Natural Resources Journal 20, no. 2 (April 1980): 299-322.
• Hargrove, Eugene C. “Anglo-American Land Use Attitudes.” Environmental Ethics 2, no. 2 (summer 1980): 121-148.
• Sagoff, Mark. “At the Shrine of Our Lady of Fatima or Why Political Questions Are Not All Economic,” Arizona Law Review 23 (1981): 1283-1298.
• Taylor, Paul W. “The Ethics of Respect for Nature.” Environmental Ethics 3, no. 3 (fall 1981): 197-218.
• Midgley, Mary. “Duties Concerning Islands: Of Rights & Obligations.” Encounter LX, no. 2 (1983): 36-43.