G R Chhatwal. (1997). Encyclopaedia of environmental air pollution- 3 vol. Anmol.
Chicago Edition CitationG R Chhatwal. Encyclopaedia of Environmental Air Pollution- 3 Vol. New Delhi: Anmol, 1997.
MLA Edition CitationG R Chhatwal. Encyclopaedia of Environmental Air Pollution- 3 Vol. Anmol, 1997.
Warning: These citations may not always be 100% accurate.