Water Supply and Sanitation Collaborative Council, Helmer, R., Hespanhol, I., United Nations Environment Programme, & World Health Organization. (1997). Water pollution control : a guide to the use of water quality management principles / edited by Richard Helmer and Ivanildo Hespanhol: A guide to the use of water quality management principles. E & FN Spon.
Chicago Style (17th ed.) CitationWater Supply and Sanitation Collaborative Council, Richard Helmer, Ivanildo Hespanhol, United Nations Environment Programme, and World Health Organization. Water Pollution Control : A Guide to the Use of Water Quality Management Principles / Edited by Richard Helmer and Ivanildo Hespanhol: A Guide to the Use of Water Quality Management Principles. London: E & FN Spon, 1997.
MLA (9th ed.) CitationWater Supply and Sanitation Collaborative Council, et al. Water Pollution Control : A Guide to the Use of Water Quality Management Principles / Edited by Richard Helmer and Ivanildo Hespanhol: A Guide to the Use of Water Quality Management Principles. E & FN Spon, 1997.