APA
National Fourm on Tourism and Environment (New Delhi), . (1991). Eco-tourism and role of industry in protection of environment, 30-31 March, 1992. New Delhi: National Forum on Tourism and Environment.
Chicago
National Fourm on Tourism and Environment (New Delhi), . 1991. Eco-tourism and role of industry in protection of environment, 30-31 March, 1992. New Delhi: National Forum on Tourism and Environment.
Harvard
National Fourm on Tourism and Environment (New Delhi), . (1991). Eco-tourism and role of industry in protection of environment, 30-31 March, 1992. New Delhi: National Forum on Tourism and Environment.
MLA
National Fourm on Tourism and Environment (New Delhi), . Eco-tourism and role of industry in protection of environment, 30-31 March, 1992. New Delhi: National Forum on Tourism and Environment. 1991.