Παραπομπή APA

World Tourism Organization. (2001). Sustainable development of ecotourism: A compilation of good practices. Madrid, Spain: World Tourism Organization.

Παραπομπή Chicago Style

World Tourism Organization. Sustainable Development of Ecotourism: A Compilation of Good Practices. Madrid, Spain: World Tourism Organization, 2001.

Παραπομπή MLA

World Tourism Organization. Sustainable Development of Ecotourism: A Compilation of Good Practices. Madrid, Spain: World Tourism Organization, 2001.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.