Dyfyniad APA
ebrary, Inc, & Downes, B. J. (2002). Monitoring ecological impacts: Concepts and practice in flowing waters. Cambridge University Press.
Dyfyniad Arddull Chicago
ebrary, Inc, and Barbara J. Downes. Monitoring Ecological Impacts: Concepts and Practice in Flowing Waters. Cambridge, UK ; New York, NY, USA: Cambridge University Press, 2002.
Dyfyniad MLA
ebrary, Inc, and Barbara J. Downes. Monitoring Ecological Impacts: Concepts and Practice in Flowing Waters. Cambridge University Press, 2002.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.