APA (7th ed.) Citation

American Water Works Association. (1975). Simplified procedures for water examination (Rev. ed.). The Association.

Chicago Style (17th ed.) Citation

American Water Works Association. Simplified Procedures for Water Examination. Rev. ed. Denver, Colorado: The Association, 1975.

MLA (9th ed.) Citation

American Water Works Association. Simplified Procedures for Water Examination. Rev. ed. The Association, 1975.