एपीए उद्धरण

(2003). Ecotourism and sustainable development. Abhijeet.

शिकागो स्टाइल उद्धरण

Ecotourism and Sustainable Development. New delhi: Abhijeet, 2003.

एमएलए उद्धरण

Ecotourism and Sustainable Development. Abhijeet, 2003.