APA (7th ed.) Citation
Hellawell J. M. (1986). Biological indicators of freshwater pollution and environmental management. Elsevier.
Chicago Style (17th ed.) Citation
Hellawell J. M. Biological Indicators of Freshwater Pollution and Environmental Management. Elsevier, 1986.
MLA (9th ed.) Citation
Hellawell J. M. Biological Indicators of Freshwater Pollution and Environmental Management. Elsevier, 1986.
Warning: These citations may not always be 100% accurate.