References

Allaby, M. 2009. Dictionary of Zoology: Third Edition. Oxford University Press, Oxford, New York, USA.

Apple Snails 2007. <URL: http://www.applesnail.net/content/snails_various.php>. Accessed 9 November 2011.

Concise Encyclopedia of Biology. 1996. Walter de Gruyter & Co., Berlin.

Gladys Archerd Shell Collection 2008.
<URL: http://shells.tricity.wsu.edu/ArcherdShellCollection/Gastropoda/Pulmonates.html>. Accessed 14 December 2011.

Harold, M.N. and Dr. R.P. Guralnick. 2010. A Field Guide to the Freshwater Mollusks of Colorado. Denver, Colorado, USA.

Hine, R. 2005. The Facts On File Dictionary of Biology: Fourth Edition. Market House Books Ltd, Aylesbury, United Kingdom.

McCarthy, T.M. and W.A. Fisher. 2000. Multiple predator-avoidance behaviours of the freshwater snail Physella heterostropha pomila: responses vary with risk. Freshwater Biology 44: 387-397.

National Museums Northern Ireland 2010. <URL: http://www.habitas.org.uk/molluscireland/species.asp?ID=59>. Accessed 14 December 2011.

Oxford Dictionary of Biology: Sixth Edition. 2008. Oxford University Press, Oxford, New York, USA.

The Freshwater Gastropods of North America 2006. <URL: http://spinner.cofc.edu/~fwgna/species/physidae/p_gyrina.html?referrer=webcluster&>. Accessed 9 November 2011.

The Living World of Molluscs 2011. <URL: http://www.molluscs.at/gastropoda/main.html>. Accessed 9 November 2011.

 

Go home