Παραπομπή APA
World Tourism Organization. (1999). The Third International Meeting on the Silk Road, Tbilisi, Georgia, 2-5 November 1998. Madrid: World Tourism Organization.
Παραπομπή Chicago StyleWorld Tourism Organization. The Third International Meeting On the Silk Road, Tbilisi, Georgia, 2-5 November 1998. Madrid: World Tourism Organization, 1999.
Παραπομπή MLAWorld Tourism Organization. The Third International Meeting On the Silk Road, Tbilisi, Georgia, 2-5 November 1998. Madrid: World Tourism Organization, 1999.
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