Singh, R. (2004). Handbook of environmental guidelines for Indian tourism. Kanishka Publishers Distributors.
Chicago-viite (17. p.)Singh, Ratandeep. Handbook of Environmental Guidelines for Indian Tourism. New Delhi: Kanishka Publishers Distributors, 2004.
MLA-viite (8. p.)Singh, Ratandeep. Handbook of Environmental Guidelines for Indian Tourism. Kanishka Publishers Distributors, 2004.
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