Cita APA (7th ed.)

(1994). Environmental science: Hazardous gas and hazardous waste. Commonwealth.

Cita Chicago (17th ed.)

Environmental Science: Hazardous Gas and Hazardous Waste. New Delhi: Commonwealth, 1994.

Cita MLA (9th ed.)

Environmental Science: Hazardous Gas and Hazardous Waste. Commonwealth, 1994.