Não informado. (1965). Water and pollution control. Southam Business Publications.
Chicago-referens (17:e uppl.)Não informado. Water and Pollution Control. Don Mills, Canada: Southam Business Publications, 1965.
MLA-referens (8:e uppl.)Não informado. Water and Pollution Control. Southam Business Publications, 1965.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.