References- Thank you!
Bartlett, R. D., and Patricia P. Bartlett. 2006. Guide and Reference to the
Amphibians of Eastern and Central North America (North of
Mexico). Gainesville, FL, University Press of Florida.
Campbell, N., Reece, J.
2008. Biology. 8th
Ed. San Francisco, California;
Pearson Education, Inc.
Garner, Trenton W. J., et al. 2006. “The emerging amphibian pathogen
Batrachochytrium dendrobatidis globally infects introduced
populations of the North American bullfrog, Rana catesbeiana.”
Biology Letters. London Royal Society Publishing <URL:
http://www.jcu.edu.au/school/phtm/PHTM/frogs/papers/
garner-2006.pdf>. Accessed 23 March 2010.
Leviton, Alan E. 1971. Reptiles and Amphibians of North
America. New
York Doubleday & Company, Inc.
Sheldon, Allen Blake. 2006. Amphibians &
Reptiles of the North Woods.
Duluth,
Kollath and Stensaas Publications.
Stebbins, Robert C., and Nathan W. Cohen. 1995.
A Natural History of
Amphibians. Princeton, Princeton University Press.
Internet Sources:
Williams, A. <URL:
http://www.critterzone.com/magazineresource/bullfrog-Rana-
catesbeiana.htm>. Accessed 15 April 2010.
n.a. 2008.
<http://wwknapp.home.mindspring.com/docs/bullfrog.html>.
Accessed 17 April 2010.
For further reading on the American Bullfrog visit:
The National Geographic website:
http://animals.nationalgeographic.com/animals/amphibians/
american-bullfrog.html
The Animal Diversity Web website:
http://animaldiversity.ummz.umich.edu/site/accounts/pictures/
Rana_catesbeiana.html
The California Reptiles & Amphibians website:
http://www.californiaherps.com/frogs/pages/
r.catesbeiana.html#taxonomy