1. Alexander, R. B., E. W. Boyer, R. A. Smith, G. E. Schwarz & R. B. Moore, 2007. The role of headwater streams in downstream water quality. Journal of the American Water Resources Association 43: 41–59.
2. Allan, J. D. & M. M. Castillo, 2007. Stream Ecology, 2nd ed. Springer, Dordrecht, The Netherlands: 436.
3. American Public Health Association (APHA), 1998. Standard Methods for the Examination of Water and Wastewater, 20th ed. American Public Health Association, Washington, DC.
4. Barbour, M. T., J. Gerritsen, B. D. Snyder & J. B. Stribling, 1999. Rapid Bioassessment Protocols for Use in Streams and Rivers; Periphyton, Benthic Macroinvertebrates, and Fish, 2nd ed. U.S. Environmental Protection Agency, Office of Water, Washington, DC. EPA 841-b-99-002.
5. Bonta, J. V., 2005. Challenges in conducting hydrologic and water quality research in drastically disturbed watersheds. Journal of Soil and Water Conservation 60: 121–133.