Παραπομπή APA

World Tourism Organization. (2001). WTO seminar on tourism and air transport: Funchal, Madeira, Portugal 25 and 26 May 2000. Madrid, Spain: World Tourism Organization.

Παραπομπή Chicago Style

World Tourism Organization. WTO Seminar On Tourism and Air Transport: Funchal, Madeira, Portugal 25 and 26 May 2000. Madrid, Spain: World Tourism Organization, 2001.

Παραπομπή MLA

World Tourism Organization. WTO Seminar On Tourism and Air Transport: Funchal, Madeira, Portugal 25 and 26 May 2000. Madrid, Spain: World Tourism Organization, 2001.

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