Παραπομπή σε μορφή APA (7η εκδ.)

World Tourism Organization. (2004). Indicators of sustainable development for tourism destinations: A guidebook. World Tourism Organization.

Παραπομπή σε μορφή Chicago (17η εκδ.)

World Tourism Organization. Indicators of Sustainable Development for Tourism Destinations: A Guidebook. Madrid, Spain: World Tourism Organization, 2004.

Παραπομπή σε μορφή MLA (9th εκδ.)

World Tourism Organization. Indicators of Sustainable Development for Tourism Destinations: A Guidebook. World Tourism Organization, 2004.