APA

Biological Methods for the Assessment of Water Quality, Cairns J., Dickson K. L. & American Society for Testing and Materials. (1973). A symposium on biological methods for the assessment of water quality presented at the seventy-fifth annual meeting, American Society for Testing and Materials. Philadelphia: American Society for Testing and Materials.

Chicago

Biological Methods for the Assessment of Water Quality, Cairns John, Dickson Kenneth L and American Society for Testing and Materials. 1973. A symposium on biological methods for the assessment of water quality presented at the seventy-fifth annual meeting, American Society for Testing and Materials. Philadelphia: American Society for Testing and Materials.

Harvard

Biological Methods for the Assessment of Water Quality, Cairns J., Dickson K. L. and American Society for Testing and Materials. (1973). A symposium on biological methods for the assessment of water quality presented at the seventy-fifth annual meeting, American Society for Testing and Materials. Philadelphia: American Society for Testing and Materials.

MLA

Biological Methods for the Assessment of Water Quality, Cairns John, Dickson Kenneth L and American Society for Testing and Materials. A symposium on biological methods for the assessment of water quality presented at the seventy-fifth annual meeting, American Society for Testing and Materials. Philadelphia: American Society for Testing and Materials. 1973.