References from the November 2009 REPTILES magazine article "Marked for Popularity."
Ernst, C.H. 2001. “An overview of the North American turtle genus Clemmys (Ritgen, 1828).” Chelonian Conservation and Biology. 4(1): 211-216.
Ernst, C.H., J.E. Lovich and R.W. Barbour. 1994. Turtles of the United States and Canada. Smithsonian Institution Press, Washington, D.C.
Feldman, C.R., and J.F. Parham. 2002. “Molecular Phylogenetics of Emydine Turtles: Taxonomic revision and the evolution of shell kinesis.” Molecular Phylogenetics and Evolution. Vol. 22, No. 3, March. p. 388-398.
Gurley, R. 2003. Keeping and Breeding Freshwater Turtles. Living Art Publishing, Ada, Oklahoma.
Gurley, R. 2005. Baby Turtles in Captivity. ECO Herpetological Publishing and Distribution. Portal, Arizona.
Harding, J. 1991. “Spotted Turtle (Clemmys guttata).” Tortuga Gazette. 27(5): 3-4.
Herman, D.W. 1990. “Captive Husbandry of the Eastern Clemmys Group at Zoo Atlanta.” Proceedings of the First International Symposium on Turtles and Tortoises: Conservation and Captive Husbandry. Eds: Beaman, Caporaso, McKeown and Graff. p. 54-62.
Holman, J.A., and U. Fritz. 2001. “A new emydine species from the Medial Miocene (Barstovian) of Nebraska, USA, with a new generic arrangement for the species of Clemmys sensu McDowell (1964) (Reptilia: Testudines: Emydidae).” Zoologische Abhandlungen. Band 51, Nr. 19.
Labak, K.M. 2004. “Pet Reptiles Need Vitamin D and Calcium for Bone Health.” Pet Column. College of Veterinary Medicine, University of Illinois at Urbana-Champaign.
Lee, D.S. 2009. “Spotted Turtle Care and Breeding Information: The attractive spotted turtle has serious conservation needs.” ReptileChannel.com.
Roach, A. 2007. The Spotted Turtle: North America’s Best. Living Art Publishing, Ada, Oklahoma.