APA引文

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

Trích dẫn kiểu Chicago

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

MLA引文

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

警告：这些引文格式不一定是100％准确.