Tohutoro APA (7th ed.)
A.W.W.A. (1967). Suggested Course Outline for Water Distribution System Operators Grade III (Advanced). American Water Works Association.
Tohutoru Kātū Chicago (17th ed.)
A.W.W.A. Suggested Course Outline for Water Distribution System Operators Grade III (Advanced). New York: American Water Works Association, 1967.
Tohutoro MLA (9th ed.)
A.W.W.A. Suggested Course Outline for Water Distribution System Operators Grade III (Advanced). American Water Works Association, 1967.
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