Παραπομπή APA

World Tourism Organization. (2002). Youth outbound travel of the Germans, the British & the French. Madrid, Spain: World Tourism Organization.

Παραπομπή Chicago Style

World Tourism Organization. Youth Outbound Travel of the Germans, the British & the French. Madrid, Spain: World Tourism Organization, 2002.

Παραπομπή MLA

World Tourism Organization. Youth Outbound Travel of the Germans, the British & the French. Madrid, Spain: World Tourism Organization, 2002.

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