Chhatwal G R. (1998). Encyclopaedia of Environmental Education (v.2). Anmol.
Chicago Edition CitationChhatwal G R. Encyclopaedia of Environmental Education (v.2). New Delhi: Anmol, 1998.
Cita MLAChhatwal G R. Encyclopaedia of Environmental Education (v.2). Anmol, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.