Bibliography

McFarland, Kenneth [Internet] Botany 111 Fall 2013. [October 23, 2013]. Available from    http://botany1112013.blogspot.com/

Patterson, D.J. Free-Living Freshwater Protozoa A Colour Guide. N.p.: Manson, 1992. Print.
Pennak, Robert W. Fresh Water Invertebrates of the United States. N.p.: Ronald, 1953. Print.

Rainis, Kenneth G., and Bruce J. Russell. Guide to Microlife. N.p.: Franklin Watts, 1996. Print.