(1992). Standard methods for the examination of water and wastewater (18. edition --.). Washington: American Public Health Association.
Chicago Style CitationStandard Methods for the Examination of Water and Wastewater. 18. edition --. Washington: American Public Health Association, 1992.
MLA CitationStandard Methods for the Examination of Water and Wastewater. 18. edition --. Washington: American Public Health Association, 1992.
Warning: These citations may not always be 100% accurate.