Comprehensive industry document series. Central Board for the Prevention & Control of Water Pollution.
Chicago-referens (17:e uppl.)Comprehensive Industry Document Series. New Delhi: Central Board for the Prevention & Control of Water Pollution.
MLA-referens (8:e uppl.)Comprehensive Industry Document Series. Central Board for the Prevention & Control of Water Pollution.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.