1. Hadley Stewart, Patterson David 1996. Free-living Freshwater Protozoa: A Colour Guide. London, FR. Manson Publishing Ltd. 223 p.
2. Forest Herman 1954. Handbook of Algae. Knoxville, TN. The University of Tennessee Press. 386 p.
3. Rainis Kenneth, Russell Bruce 1996. Guide to Microlife. Danbury, CT. Franlin Watts. 288 p.
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