References
EOL. <URL: http://eol.org/pages/452740/overview>. Accessed 1 November 2011.
Hickman Jr., C.P., L.S. Roberts, S.L. Keen,
A.Larson, and D.J. Eisenhour. 2009. Animal Diversity.
McGraw-Hill Higher Education: Boston.
NBII 2011. <URL: http://www.nbii.gov/portal/server.pt?open=512&objID=1481&PageID=5110&mode=2&cached=true>. Accessed 1 November 2011.
Nekola, J.C. 2003. Large-scale terrestrial
gastropod community composition patterns in the Great Lakes
region of North America. Diversity and Distributions 9:55-71.
Orstan, A. 1999. Land Snails of Black Hill Regional Park, Montgomery County, Maryland. The Maryland Naturalist 43:20-24.
Want more information about snails? Check out these websites!
http://www.geology.wisc.edu/~mk/landsnails.html
http://lter.limnology.wisc.edu/dataset/snail-survey-northern-wisconsin-lakes
Check out the Multiple Organisms and Wisconsin land snails pages