APA (7th ed.) Citation

Hellawell, J. M. (1986). Biological indicators of freshwater pollution and environmental management / J.M. Hellawell. Elsevier Applied Science.

Chicago Style (17th ed.) Citation

Hellawell, J. M. Biological Indicators of Freshwater Pollution and Environmental Management / J.M. Hellawell. London: Elsevier Applied Science, 1986.

MLA (9th ed.) Citation

Hellawell, J. M. Biological Indicators of Freshwater Pollution and Environmental Management / J.M. Hellawell. Elsevier Applied Science, 1986.

Warning: These citations may not always be 100% accurate.