Dyfyniad APA

Bailey, R. C., & Norris, R. H. R. (2003). Bioassessment of freshwater ecosystems: Using the reference condition approach. Springer.

Dyfyniad Arddull Chicago

Bailey, Robert C., and Richard H. Reynoldson Norris. Bioassessment of Freshwater Ecosystems: Using the Reference Condition Approach. USA: Springer, 2003.

Dyfyniad MLA

Bailey, Robert C., and Richard H. Reynoldson Norris. Bioassessment of Freshwater Ecosystems: Using the Reference Condition Approach. Springer, 2003.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.