Gaya APA
Freeman, H, M. (1989).
Standard Handbook of Hazardous Waste Treatment and Disposal (1989).
:
Nw York, McGraw Hill Co.,.
Gaya MLA
Freeman, Harry, M.
"Standard Handbook of Hazardous Waste Treatment and Disposal".
1989
:
Nw York, McGraw Hill Co.,,
1989.
Text.