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