Παραπομπή σε μορφή APA (7η εκδ.)

World Tourism Organization. (2010). Tourism and biodiversity: Achieving common goals towars sustainablity. World Tourism Organization.

Παραπομπή σε μορφή Chicago (17η εκδ.)

World Tourism Organization. Tourism and Biodiversity: Achieving Common Goals Towars Sustainablity. Madrid: World Tourism Organization, 2010.

Παραπομπή σε μορφή MLA (9th εκδ.)

World Tourism Organization. Tourism and Biodiversity: Achieving Common Goals Towars Sustainablity. World Tourism Organization, 2010.