APA
Hazardous Waste Research Symposium, Hazardous Waste Research Symposium, Hazardous Waste Research Symposium & Risk Reduction Engineering Laboratory U.S. (1990). Sixteenth annual Hazardous Waste Research Symposium: remedial action, treatment and disposal of hazardous waste. Cincinnati, Ohio: The Laboratory.
Chicago
Hazardous Waste Research Symposium, Hazardous Waste Research Symposium, Hazardous Waste Research Symposium and Risk Reduction Engineering Laboratory U.S. 1990. Sixteenth annual Hazardous Waste Research Symposium: remedial action, treatment and disposal of hazardous waste. Cincinnati, Ohio: The Laboratory.
Harvard
Hazardous Waste Research Symposium, Hazardous Waste Research Symposium, Hazardous Waste Research Symposium and Risk Reduction Engineering Laboratory U.S. (1990). Sixteenth annual Hazardous Waste Research Symposium: remedial action, treatment and disposal of hazardous waste. Cincinnati, Ohio: The Laboratory.
MLA
Hazardous Waste Research Symposium, Hazardous Waste Research Symposium, Hazardous Waste Research Symposium and Risk Reduction Engineering Laboratory U.S. Sixteenth annual Hazardous Waste Research Symposium: remedial action, treatment and disposal of hazardous waste. Cincinnati, Ohio: The Laboratory. 1990.