Παραπομπή σε μορφή APA (7η εκδ.)

World Tourism Organization. (2002). General guidelines for using data on international air-passenger traffic for tourism analysis. World Tourism Organization.

Παραπομπή σε μορφή Chicago (17η εκδ.)

World Tourism Organization. General Guidelines for Using Data on International Air-passenger Traffic for Tourism Analysis. Madrid: World Tourism Organization, 2002.

Παραπομπή σε μορφή MLA (9th εκδ.)

World Tourism Organization. General Guidelines for Using Data on International Air-passenger Traffic for Tourism Analysis. World Tourism Organization, 2002.