Παραπομπή σε μορφή APA (7η εκδ.)

World Tourism Organization. (2004). Information and documentation resource centres for tourism: Guidelines for establishment and maintenance. World Tourism Organization.

Παραπομπή σε μορφή Chicago (17η εκδ.)

World Tourism Organization. Information and Documentation Resource Centres for Tourism: Guidelines for Establishment and Maintenance. Madrid, Spain: World Tourism Organization, 2004.

Παραπομπή σε μορφή MLA (9th εκδ.)

World Tourism Organization. Information and Documentation Resource Centres for Tourism: Guidelines for Establishment and Maintenance. World Tourism Organization, 2004.