See H. Curtis, The Marvelous Animals (1968); T. Jahn, How to Know the Protozoa (2d ed. 1978); J. J. Lee, S. H. Hunter, and E. C. Bovee, An Illustrated Guide to the Protozoa (1985); M. Sleigh, Protozoa and Other Protists (1989).
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.