APA

American Public Health Association, American Water Works Association & Federation of Sewage and Industrial Wastes Associations. (1971). Standard methods for the examination of water and wastewater. Washington, D.C: American Public Health Association.

Chicago

American Public Health Association, American Water Works Association and Federation of Sewage and Industrial Wastes Associations. 1971. Standard methods for the examination of water and wastewater. Washington, D.C: American Public Health Association.

Harvard

American Public Health Association, American Water Works Association and Federation of Sewage and Industrial Wastes Associations. (1971). Standard methods for the examination of water and wastewater. Washington, D.C: American Public Health Association.

MLA

American Public Health Association, American Water Works Association and Federation of Sewage and Industrial Wastes Associations. Standard methods for the examination of water and wastewater. Washington, D.C: American Public Health Association. 1971.