1. Davis, W. S. and Simons, T. P. 1995.Biological Assessment and Criteria: Tools for Resource Planning and Decision Making, Edited by: Davis, W. S. and Simons, T. P. 432Boca Raton, FL: Lewis.
2. Rosenberg, D. M. and Resh, V. H. 1993.Freshwater Biomonitoring and Benthic Macroinvertebrates, Edited by: Rosenberg, D. M. and Resh, V. H. 488New York: Chapman & Hall.