References
Animal Diversity Web 2008. <URL:http://animaldiversity.ummz.umich.edu/site/index.html>
Accessed 28 March 2011.
Hotopp, K. and Pearce, T. Carnegie Museum of Natural History
2005.
<URL:http://www.carnegiemnh.org/mollusks/palandsnails/st_aene.html> Accessed
25 March 2011.
Evans, J.G. 1972. Land Snails in Archeology. Seminar Press Inc.
New York, NY, USA: 87-109
Fretter, V. 1968. Studies in the Structure, Physiology and Ecology of Molluscs. Academic Press Inc. New
York, NY: 377 pp.
Pilsbry, H.A. 1926. Land Mollusca of North America (North of Mexico), Vol. 1, Part 2. Monograph No.3,
Academy of Natural Sciences of Philadelphia, Philadelphia, PA: 863-865.
Turgeon, D.D. et al. 1988. Common and Scientific Names of Aquatic Invertebrates from the Uniter States
And Canada: Mollusks. American Fisheries Society
Bethesda, MD: 52-140.
Wisconsin Department of Natural Resources 2009. <URL:http://www.dnr.wi.gov>
Accessed 27 March 2011
Wilbur, K.M. and Yonge, C.M. 1964. Physiology of Mollusca, vol. 1. Academic Press Inc. New York, NY:
473 pp.