Não informado. Notes on Water Pollution. Water Pollution Research Laboratory, Department of Scientific and Industrial Research.
Chicago-referens (17:e uppl.)Não informado. Notes on Water Pollution. London: Water Pollution Research Laboratory, Department of Scientific and Industrial Research.
MLA-referens (8:e uppl.)Não informado. Notes on Water Pollution. Water Pollution Research Laboratory, Department of Scientific and Industrial Research.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.