P C Sinha. (2003). Encyclopaedia of ecotourism (v.1). Anmol.
Chicago Edition CitationP C Sinha. Encyclopaedia of Ecotourism (v.1). New Delhi: Anmol, 2003.
MLA Edition CitationP C Sinha. Encyclopaedia of Ecotourism (v.1). Anmol, 2003.
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