Παραπομπή APA

World Tourism Organization. (2002). Tourism in the age of alliances, mergers and acquisitions. Madrid: World Tourism Organization.

Παραπομπή Chicago Style

World Tourism Organization. Tourism in the Age of Alliances, Mergers and Acquisitions. Madrid: World Tourism Organization, 2002.

Παραπομπή MLA

World Tourism Organization. Tourism in the Age of Alliances, Mergers and Acquisitions. Madrid: World Tourism Organization, 2002.

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