References
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DeBlieu, Jan. Meant To Be Wild. Golden, Colorado: Fulcrum Pub., 1991.
Durrell, Lee. Gaia State of the Ark Atlas. New York: Doubleday, 1986.
Lean, Geoffrey, Don Hinrichsen, and Adam Markham (eds.). Atlas of the Environment. New York: Prentice Hall Press, 1990.
Lowe, David W., John Matthews, and Charles Moseley (eds.). The Official World Wildlife Fund Guide to Endangered Species of North America. Vol. 1, Washington D.C.: Beacham Pub., Inc., 1990.
National Audubon Society. Audubon Tool Kit: Endangered Species. Washington, D.C.: National Audubon Society, 1992.
Tesar, Jenny. Endangered Habitats. New York: Facts On File, 1992.
Wilson, Edward O. The Diversity of Life. Cambridge, Massachusetts: Harvard University Press, 1992.
