Não informado. (1977). Water quality international. International Association on Water Pollution Research and Control.
Chicago-referens (17:e uppl.)Não informado. Water Quality International. London: International Association on Water Pollution Research and Control, 1977.
MLA-referens (8:e uppl.)Não informado. Water Quality International. International Association on Water Pollution Research and Control, 1977.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.