एपीए उद्धरण

Singh, R. (2003). National ecotourism and wildlife tourism: Policies and guidelines. Kanishka.

शिकागो स्टाइल उद्धरण

Singh, Ratandeep. National Ecotourism and Wildlife Tourism: Policies and Guidelines. New Delhi: Kanishka, 2003.

एमएलए उद्धरण

Singh, Ratandeep. National Ecotourism and Wildlife Tourism: Policies and Guidelines. Kanishka, 2003.