Audesirk & Audesirk, Biology: Life On Earth, Macmillan Publishing Company, New York.
Jablonski, David. Nature, The Tropics as a Source of Evolutionary Novelty through Geological Time, Vol.364, July 3, 1993.
Global-Scale latitudinal patterns of species diversity in the deep-sea benthos, Nature, Vol 365.
Leakey, Richard/Lewin, Roger, Origin of Species Reconsidered, Doubleday Publishing, N.Y. 1992.
Leakey, Richard/Lewin, Roger. The Sixth Extinction, Coubleday Publishing, NY, 1995.
Mares, Michael A. Neotropical Animals and the Myth of Biodiversity, Science, Vol 255, Jan/Feb 1992.
May, Robert M. How Many Species Are There?, Science, Sept/Oct 1988.