APA Citation

Hellawel, J. (1986). Biological indicators of freshwater pollution and environmental management. USA: [yay. y.].

Chicago Style Citation

Hellawel, J.M. Biological Indicators of Freshwater Pollution and Environmental Management. USA: [yay. y.], 1986.

MLA Citation

Hellawel, J.M. Biological Indicators of Freshwater Pollution and Environmental Management. USA: [yay. y.], 1986.

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