Theroux , F. R., Edridge , E. F., & Mallmann, W. .. L. (1997). Laboratory manual for chemical and bacterial anaysis of water and sewage. Allied scientific publishers.

Theroux , Frank R., Edward F. Edridge , and W . LeRoy Mallmann. Laboratory Manual for Chemical and Bacterial Anaysis of Water and Sewage. New Delhi: Allied scientific publishers, 1997.

Theroux , Frank R., et al. Laboratory Manual for Chemical and Bacterial Anaysis of Water and Sewage. Allied scientific publishers, 1997.