Tohutoro APA (7th ed.)
Chhatwal, G. (1997). Encyclopaedia of environmental waste pollution. Anmol.
Tohutoru Kātū Chicago (17th ed.)
Chhatwal, G.R. Encyclopaedia of Environmental Waste Pollution. New Delhi: Anmol, 1997.
Tohutoro MLA (9th ed.)
Chhatwal, G.R. Encyclopaedia of Environmental Waste Pollution. Anmol, 1997.
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