Downes, B. J. (2002). Monitoring ecological impacts: Concepts and practice in flowing waters. Cambridge University Press.
Chicago-čujuhus (17. p.)Downes, Barbara J. Monitoring Ecological Impacts: Concepts and Practice in Flowing Waters. New York, USA: Cambridge University Press, 2002.
MLA-čujuhus (9. p.)Downes, Barbara J. Monitoring Ecological Impacts: Concepts and Practice in Flowing Waters. Cambridge University Press, 2002.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.