Hardam Singh Azad. (1976). Industrial Wastewater Management Handbook. McGraw-Hill.
Dyfyniad Arddull ChicagoHardam Singh Azad. Industrial Wastewater Management Handbook. New York: McGraw-Hill, 1976.
Dyfyniad MLAHardam Singh Azad. Industrial Wastewater Management Handbook. McGraw-Hill, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.