University of Idaho - Center for Teaching Innovation
http://www.its2.uidaho.edu/cti/

Bailey, R.G. 1988. Ecogeographic analysis: a guide to the ecological divisions of land for resource management.
USDA For. Ser. MiSc. Publ. No. 1465. Washington D.C. 18 pp.

Barnes, B.V., Zak, D.R., Denton, S.R., Spurr, S.H. 1998. Forest Ecology 4th Edition John Wiley& Sons.
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Gates, D.M. 1968, Energy exchange between organism and the environment. In W.P. Lowery (ed.) Biometerology.
Oregon State Univ. Press, Corvallis, OR.

Mackenzie, A., Ball, A.S., and Virdee, S.R. 1998. Instant notes in Ecology. Springer-Verlag.
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Tallis, J.H. 1991. Plant community History. Chapman and Hall.
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Thoreau, H.D. 1993. Faith in a seed. Island Press.
Washington D.C. 283 pp.