Works Cited

Works cited:

McFarland, Kenneth [Internet] Botany 111 Fall 2013. [cited 22 October 2013]. Available from http://botany1112013.blogspot.com/

Patterson DJ. 1992. Free-Living Freshwater Protozoa. Washington (DC): Wolfie Publishing. 223p.

Ward HB. 1918. Fresh-Water Biology. Boston (MASS): Stanbope press. 1106p.

Patterson DJ. 1992. Free-Living Freshwater Protozoa. Washington (DC): Wolfie Publishing. 223p.

Thorp JH. 2010. Ecology and Classification of North American Freshwater Invertebrates. San        Diego (CA): Elsevier Inc. 1021p.

Pennak RW. 1989. Fresh-Water invertebrates of the United States. New York (NY): John Wiley and Sons, Inc . 628p.