Viessman, W., & Hammer, M. J. (1993). Water supply and pollution control (5th ed.). HarperCollins College Publishers.
Chicago-viite (17. p.)Viessman, Warren, ja Mark J. Hammer. Water Supply and Pollution Control. 5th ed. New York: HarperCollins College Publishers, 1993.
MLA-viite (9. p.)Viessman, Warren, ja Mark J. Hammer. Water Supply and Pollution Control. 5th ed. HarperCollins College Publishers, 1993.
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