Cita APA (7th ed.)
Chhatwal, G. (1997). Encyclopaedia of environmental waste pollution. Anmol.
Cita Chicago (17th ed.)
Chhatwal, G.R. Encyclopaedia of Environmental Waste Pollution. New Delhi: Anmol, 1997.
Cita MLA (9th ed.)
Chhatwal, G.R. Encyclopaedia of Environmental Waste Pollution. Anmol, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.