References
About.com. Animals/Wildlife 2012. <URL: http://animals.about.com/od/mollusks/ig/World-of-
Snails/Snail-1.htm>.
Accessed 5 April 2012.
Domain Eukarya 2012. <URL:http://classic.sidwell.edu/us/science/vlb5/labs/classification_lab/Eukarya/>.
Accessed 5 April 2012.
Hickman Jr., C.P., Roberts, L.S., Keen, S.L.,
Larson, A., and Eisenhour, D.J. 2009.
Animal Diversity. McGraw-Hill Companies Inc. New
York, New York.
USA.
"How Do Snails Reproduce." Facts about
Snails. Infoqis Publishing, Co. Web. 02 May 2012.
<URL:http://www.snail-world.com/How-do-Snails- Reproduce.html>.
Institute of Malacology. and University of Michigan . 1991.
International Journal of Malacology.
Malacologia Vol (33).
Available
from:http://www.biodiversitylibrary.org/item/47260.
Accessed 2012 Feb 22.
"Polygyridae,
1895." Encyclopedia of Life, <URL:http://eol.org/data_objects/11613750>.
Accessed 5 April 2012.
Schoolworkerhelper
2010. <URL:
http://schoolworkhelper.net/2010/10/kingdom-animalia-general-characteristics-of-animals/>.
Accessed 5
April 2012.
Wilbur, Karl M. and C.M.Yonge. 1984. Physiology of Mollusca I.
Academic Press, New York, New York, USA.
Wilbur, Karl M. and C.M.Yonge. Physiology of Mollusca II.
Academic Press, New York, New York, USA.
Wilbur, Karl M. 1985. The Mollusca. volume 10 Evolution.
Academic Press, Orlando, Florida, USA.
Parker, Sybil P., Parker. 1982. Synopsis and Classification of
Living Organisms. McGraw-Hill Inc. U.S.A.
Infoqis Publishing. <http://www.snail-world.com/How-do-Snails-Reproduce.html>. Accessed 5 April 2012.