एपीए उद्धरण

Badan, B. (2007). Ecotourism. Common wealth.

शिकागो स्टाइल उद्धरण

Badan, B.S. Ecotourism. New Delhi: Common wealth, 2007.

एमएलए उद्धरण

Badan, B.S. Ecotourism. Common wealth, 2007.