Dyfyniad APA

James, A., & Evison, L. (1960). Biological indicators of water quality. John Wiley and sons.

Dyfyniad Arddull Chicago

James, A., and Lilian Evison. Biological Indicators of Water Quality. New York: John Wiley and sons, 1960.

Dyfyniad MLA

James, A., and Lilian Evison. Biological Indicators of Water Quality. John Wiley and sons, 1960.

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