Não informado. (1967). Water Pollution Control. Institute of Water Pollution Control.
Chicago-viite (17. p.)Não informado. Water Pollution Control. London: Institute of Water Pollution Control, 1967.
MLA-viite (8. p.)Não informado. Water Pollution Control. Institute of Water Pollution Control, 1967.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.