Bibliography

Works Cited

Patterson, D.J.."Free-Living Freshwater Protozoa, A Colour Guide".1992. ASM Press. Washington DC (p. 223)
Pennak, Robert W.."Fresh-Water Invertebrates of the United States".1989.John Wiley & Sons, Inc.New York, NY (p. 628)
Rainis, Kenneth G., Russell, Bruce J.."Guide to Microlife".1996.Franklin Watts. New York, NY (p. 287)