A. "Frogs and Toads of Georgia" by Walter W. Knapp, 5/62001 -  http://wwknapp.home.mindspring.com/Docs/gopher.frogs.html 

B. "How Rare is the Gopher Frog?" by Whit Gibbons, 3/15/2001, Ecoviews - University of Georgia - Savannah River Ecology Laboratory, http://www.uga.edu/srelherp/ecoview/Eco8.htm  

C. "Gopher Frog" at eNature.com - http://www.enature.com/fieldguide/showSpeciesRECNUM.asp?recnum=ar0024 

D. "Gopher Frog" Collier County Natural Resources Department - http://www.co.collier.fl.us/natresources/species/gopher%20frog.htm 

E.  Virtual Frog Dissection Kit" at Lawrence Berkley National Laboratory - http://george.lbl.gov/ITG.hm.pg.docs/dissect/dissect.html  

F. Cumberland County, NC Endangered and Concerned Species List, 3/22/2001 -  http://nc-es.fws.gov/es/cntylist/cumberland.html 

G. The Endangered Species Program at the US Fish and Wildlife Service - http://endangered.fws.gov/index.html 

H. Endangered Species, Southeast Region of the US Fish and Wildlife Service - http://es.southeast.fws.gov/endspec.html 

I.  "Florida's Endangered Species, Threatened Species, and Species of Special Concern", The Florida Fish and Wildlife Conservation Commission - http://floridaconservation.org/pubs/endanger.html 

J. Website of the US Fish and Wildlife Service - http://www.fws.gov/ 

K. Website of The Florida Fish and Wildlife Conservation Commission - http://floridaconservation.org/ 

L. Marianne Cowley. NSIS: Florida Wildlife: Gopher Tortoise. My Florida Backyard. 2001 - http://www.nsis.org/wildlife/rept/turt-tort.html and http://www.nsis.org/gallery/wl-gopher_tort.html