World Tourism Organization. (1988). The problems of protectionism and measures to reduce obstacles to international trade in tourism services. World Tourism Organization.
Chicago Style (17th ed.) CitationWorld Tourism Organization. The Problems of Protectionism and Measures to Reduce Obstacles to International Trade in Tourism Services. Madrid: World Tourism Organization, 1988.
MLA (9th ed.) CitationWorld Tourism Organization. The Problems of Protectionism and Measures to Reduce Obstacles to International Trade in Tourism Services. World Tourism Organization, 1988.
Warning: These citations may not always be 100% accurate.