एपीए उद्धरण

Singh, R. (2004). National ecotourism & wildlife tourism. Kanishka publishers.

शिकागो स्टाइल उद्धरण

Singh, Ratandeep. National Ecotourism & Wildlife Tourism. NewDelhi: Kanishka publishers, 2004.

एमएलए उद्धरण

Singh, Ratandeep. National Ecotourism & Wildlife Tourism. Kanishka publishers, 2004.