एपीए उद्धरण

Durham, W. H., & Stronza, A. (2008). Ecotourism and conservation in the Americas. CAB International.

शिकागो स्टाइल उद्धरण

Durham, William H., और Amanda Stronza. Ecotourism and Conservation in the Americas. UK: CAB International, 2008.

एमएलए उद्धरण

Durham, William H., और Amanda Stronza. Ecotourism and Conservation in the Americas. CAB International, 2008.